20612492290 has 48 divisors (see below), whose sum is σ = 40202229096. Its totient is φ = 7605811200.

The previous prime is 20612492287. The next prime is 20612492311. The reversal of 20612492290 is 9229421602.

It can be written as a sum of positive squares in 12 ways, for example, as 486246601 + 20126245689 = 22051^2 + 141867^2 .

It is a super-3 number, since 3×20612492290³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3513960 + ... + 3519820.

Almost surely, 2^20612492290 is an apocalyptic number.

20612492290 is a deficient number, since it is larger than the sum of its proper divisors (19589736806).

20612492290 is a wasteful number, since it uses less digits than its factorization.

20612492290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7975 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20612492290 in words is "twenty billion, six hundred twelve million, four hundred ninety-two thousand, two hundred ninety".