20957659941 has 16 divisors (see below), whose sum is σ = 29255405760. Its totient is φ = 13327453440.

The previous prime is 20957659937. The next prime is 20957659951. The reversal of 20957659941 is 14995675902.

It is not a de Polignac number, because 20957659941 - 2² = 20957659937 is a prime.

It is a super-2 number, since 2×20957659941² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20957659901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1443940 + ... + 1458381.

It is an arithmetic number, because the mean of its divisors is an integer number (1828462860).

Almost surely, 2^20957659941 is an apocalyptic number.

It is an amenable number.

20957659941 is a deficient number, since it is larger than the sum of its proper divisors (8297745819).

20957659941 is a wasteful number, since it uses less digits than its factorization.

20957659941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902436.

The product of its (nonzero) digits is 6123600, while the sum is 57.

The spelling of 20957659941 in words is "twenty billion, nine hundred fifty-seven million, six hundred fifty-nine thousand, nine hundred forty-one".