20756947694 has 16 divisors (see below), whose sum is σ = 35590168800. Its totient is φ = 8894127264.

The previous prime is 20756947661. The next prime is 20756947703. The reversal of 20756947694 is 49674965702.

It is a congruent number.

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, 65309 + ... + 213960.

It is an arithmetic number, because the mean of its divisors is an integer number (2224385550).

Almost surely, 2^20756947694 is an apocalyptic number.

20756947694 is a deficient number, since it is larger than the sum of its proper divisors (14833221106).

20756947694 is a wasteful number, since it uses less digits than its factorization.

20756947694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284587.

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 20756947694 in words is "twenty billion, seven hundred fifty-six million, nine hundred forty-seven thousand, six hundred ninety-four".