1645000980480 has 2688 divisors, whose sum is σ = 7362999221760. Its totient is φ = 346851901440.

The previous prime is 1645000980451. The next prime is 1645000980481. The reversal of 1645000980480 is 840890005461.

1645000980480 is a `hidden beast` number, since 1 + 64 + 500 + 0 + 9 + 8 + 0 + 4 + 80 = 666.

It is a super-2 number, since 2×1645000980480² (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 not an unprimeable number, because it can be changed into a prime (1645000980481) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 24552253407 + ... + 24552253473.

It is an arithmetic number, because the mean of its divisors is an integer number (2739211020).

Almost surely, 2^{1645000980480} is an apocalyptic number.

1645000980480 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 1645000980480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3681499610880).

1645000980480 is an abundant number, since it is smaller than the sum of its proper divisors (5717998241280).

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

1645000980480 is a wasteful number, since it uses less digits than its factorization.

1645000980480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1645000980480 in words is "one trillion, six hundred forty-five billion, nine hundred eighty thousand, four hundred eighty".