1980715161600 has 2592 divisors, whose sum is σ = 9042515773200. Its totient is φ = 428906741760.

The previous prime is 1980715161583. The next prime is 1980715161617. The reversal of 1980715161600 is 61615170891.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

1980715161600 is a `hidden beast` number, since 1 + 9 + 8 + 0 + 71 + 516 + 1 + 60 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1980715161583) and next prime (1980715161617).

It is a tau number, because it is divible by the number of its divisors (2592).

It is a super-2 number, since 2×1980715161600² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 104248166391 + ... + 104248166409.

Almost surely, 2^{1980715161600} is an apocalyptic number.

1980715161600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1980715161600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4521257886600).

1980715161600 is an abundant number, since it is smaller than the sum of its proper divisors (7061800611600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1980715161600 is an frugal number, since it uses more digits than its factorization.

1980715161600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 1980715161600 in words is "one trillion, nine hundred eighty billion, seven hundred fifteen million, one hundred sixty-one thousand, six hundred".