15618204672 has 176 divisors, whose sum is σ = 47728834560. Its totient is φ = 4447936512.

The previous prime is 15618204659. The next prime is 15618204689. The reversal of 15618204672 is 27640281651.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 7890979 + ... + 7892957.

It is an arithmetic number, because the mean of its divisors is an integer number (271186560).

Almost surely, 2^15618204672 is an apocalyptic number.

15618204672 is a gapful number since it is divisible by the number (12) 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 15618204672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23864417280).

15618204672 is an abundant number, since it is smaller than the sum of its proper divisors (32110629888).

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

15618204672 is a wasteful number, since it uses less digits than its factorization.

15618204672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 15618204672 in words is "fifteen billion, six hundred eighteen million, two hundred four thousand, six hundred seventy-two".