20555526315 has 16 divisors (see below), whose sum is σ = 32920160256. Its totient is φ = 10952508000.

The previous prime is 20555526311. The next prime is 20555526323. The reversal of 20555526315 is 51362555502.

It is not a de Polignac number, because 20555526315 - 2² = 20555526311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20555526311) 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, 636171 + ... + 667700.

It is an arithmetic number, because the mean of its divisors is an integer number (2057510016).

Almost surely, 2^20555526315 is an apocalyptic number.

20555526315 is a deficient number, since it is larger than the sum of its proper divisors (12364633941).

20555526315 is a wasteful number, since it uses less digits than its factorization.

20555526315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304930.

The product of its (nonzero) digits is 225000, while the sum is 39.

The spelling of 20555526315 in words is "twenty billion, five hundred fifty-five million, five hundred twenty-six thousand, three hundred fifteen".