20652690490 has 32 divisors (see below), whose sum is σ = 39275907840. Its totient is φ = 7797384000.

The previous prime is 20652690427. The next prime is 20652690511. The reversal of 20652690490 is 9409625602.

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, 149061 + ... + 252040.

It is an arithmetic number, because the mean of its divisors is an integer number (1227372120).

Almost surely, 2^20652690490 is an apocalyptic number.

20652690490 is a deficient number, since it is larger than the sum of its proper divisors (18623217350).

20652690490 is a wasteful number, since it uses less digits than its factorization.

20652690490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401398.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 20652690490 in words is "twenty billion, six hundred fifty-two million, six hundred ninety thousand, four hundred ninety".