20955827715 has 16 divisors (see below), whose sum is σ = 33536138400. Its totient is φ = 11174170112.

The previous prime is 20955827701. The next prime is 20955827723. The reversal of 20955827715 is 51772855902.

It is a cyclic number.

It is not a de Polignac number, because 20955827715 - 2⁷ = 20955827587 is a prime.

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, 64320 + ... + 214589.

It is an arithmetic number, because the mean of its divisors is an integer number (2096008650).

Almost surely, 2^20955827715 is an apocalyptic number.

20955827715 is a deficient number, since it is larger than the sum of its proper divisors (12580310685).

20955827715 is a wasteful number, since it uses less digits than its factorization.

20955827715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283926.

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 20955827715 in words is "twenty billion, nine hundred fifty-five million, eight hundred twenty-seven thousand, seven hundred fifteen".