15780098160 has 80 divisors (see below), whose sum is σ = 54353678880. Its totient is φ = 4208025600.

The previous prime is 15780098149. The next prime is 15780098179. The reversal of 15780098160 is 6189008751.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×15780098160² (a number of 21 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 15 ways as a sum of consecutive naturals, for example, 3650641 + ... + 3654960.

It is an arithmetic number, because the mean of its divisors is an integer number (679420986).

Almost surely, 2^15780098160 is an apocalyptic number.

15780098160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15780098160 is an abundant number, since it is smaller than the sum of its proper divisors (38573580720).

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

15780098160 is a wasteful number, since it uses less digits than its factorization.

15780098160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305623 (or 7305611 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The spelling of 15780098160 in words is "fifteen billion, seven hundred eighty million, ninety-eight thousand, one hundred sixty".