20964757424 has 40 divisors (see below), whose sum is σ = 43760324160. Its totient is φ = 9672380928.

The previous prime is 20964757423. The next prime is 20964757441. The reversal of 20964757424 is 42475746902.

It is not an unprimeable number, because it can be changed into a prime (20964757423) 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, 576617 + ... + 611895.

It is an arithmetic number, because the mean of its divisors is an integer number (1094008104).

Almost surely, 2^20964757424 is an apocalyptic number.

It is an amenable number.

20964757424 is an abundant number, since it is smaller than the sum of its proper divisors (22795566736).

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

20964757424 is a wasteful number, since it uses less digits than its factorization.

20964757424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38157 (or 38151 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 20964757424 in words is "twenty billion, nine hundred sixty-four million, seven hundred fifty-seven thousand, four hundred twenty-four".