20858655376 has 80 divisors (see below), whose sum is σ = 46359782784. Its totient is φ = 9006262272.

The previous prime is 20858655371. The next prime is 20858655437. The reversal of 20858655376 is 67355685802.

It is not an unprimeable number, because it can be changed into a prime (20858655371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 572851 + ... + 608173.

Almost surely, 2^20858655376 is an apocalyptic number.

20858655376 is a gapful number since it is divisible by the number (26) 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 20858655376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23179891392).

20858655376 is an abundant number, since it is smaller than the sum of its proper divisors (25501127408).

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

20858655376 is a wasteful number, since it uses less digits than its factorization.

20858655376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35528 (or 35522 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 20858655376 in words is "twenty billion, eight hundred fifty-eight million, six hundred fifty-five thousand, three hundred seventy-six".