20357577215 has 16 divisors (see below), whose sum is σ = 24659316000. Its totient is φ = 16133169792.

The previous prime is 20357577199. The next prime is 20357577259. The reversal of 20357577215 is 51277575302.

It is a cyclic number.

It is not a de Polignac number, because 20357577215 - 2⁴ = 20357577199 is a prime.

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, 241256 + ... + 314514.

It is an arithmetic number, because the mean of its divisors is an integer number (1541207250).

Almost surely, 2^20357577215 is an apocalyptic number.

20357577215 is a deficient number, since it is larger than the sum of its proper divisors (4301738785).

20357577215 is a wasteful number, since it uses less digits than its factorization.

20357577215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73786.

The product of its (nonzero) digits is 514500, while the sum is 44.

The spelling of 20357577215 in words is "twenty billion, three hundred fifty-seven million, five hundred seventy-seven thousand, two hundred fifteen".