20615602160 has 80 divisors (see below), whose sum is σ = 50944614336. Its totient is φ = 7731523584.

The previous prime is 20615602097. The next prime is 20615602199. The reversal of 20615602160 is 6120651602.

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

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, 328862 + ... + 386498.

Almost surely, 2^20615602160 is an apocalyptic number.

20615602160 is a gapful number since it is divisible by the number (20) 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 20615602160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25472307168).

20615602160 is an abundant number, since it is smaller than the sum of its proper divisors (30329012176).

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

20615602160 is a wasteful number, since it uses less digits than its factorization.

20615602160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57930 (or 57924 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 20615602160 in words is "twenty billion, six hundred fifteen million, six hundred two thousand, one hundred sixty".