20746756794 has 16 divisors (see below), whose sum is σ = 41562561600. Its totient is φ = 6904077600.

The previous prime is 20746756781. The next prime is 20746756799. The reversal of 20746756794 is 49765764702.

It is not an unprimeable number, because it can be changed into a prime (20746756799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2873094 + ... + 2880305.

It is an arithmetic number, because the mean of its divisors is an integer number (2597660100).

Almost surely, 2^20746756794 is an apocalyptic number.

20746756794 is an abundant number, since it is smaller than the sum of its proper divisors (20815804806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20746756794 is a wasteful number, since it uses less digits than its factorization.

20746756794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754005.

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 20746756794 in words is "twenty billion, seven hundred forty-six million, seven hundred fifty-six thousand, seven hundred ninety-four".