20551846358 has 32 divisors (see below), whose sum is σ = 31908038400. Its totient is φ = 9923037696.

The previous prime is 20551846319. The next prime is 20551846373. The reversal of 20551846358 is 85364815502.

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, 2098898 + ... + 2108666.

It is an arithmetic number, because the mean of its divisors is an integer number (997126200).

Almost surely, 2^20551846358 is an apocalyptic number.

20551846358 is a deficient number, since it is larger than the sum of its proper divisors (11356192042).

20551846358 is a wasteful number, since it uses less digits than its factorization.

20551846358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10136.

The product of its (nonzero) digits is 1152000, while the sum is 47.

The spelling of 20551846358 in words is "twenty billion, five hundred fifty-one million, eight hundred forty-six thousand, three hundred fifty-eight".