20756212492 has 24 divisors (see below), whose sum is σ = 39499506144. Its totient is φ = 9503638272.

The previous prime is 20756212457. The next prime is 20756212507. The reversal of 20756212492 is 29421265702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4122328 + ... + 4127359.

It is an arithmetic number, because the mean of its divisors is an integer number (1645812756).

Almost surely, 2^20756212492 is an apocalyptic number.

It is an amenable number.

20756212492 is a deficient number, since it is larger than the sum of its proper divisors (18743293652).

20756212492 is a wasteful number, since it uses less digits than its factorization.

20756212492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8249745 (or 8249743 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 20756212492 in words is "twenty billion, seven hundred fifty-six million, two hundred twelve thousand, four hundred ninety-two".