20410961956 has 54 divisors (see below), whose sum is σ = 45671689014. Its totient is φ = 7952313600.

The previous prime is 20410961887. The next prime is 20410961959. The reversal of 20410961956 is 65916901402.

It can be written as a sum of positive squares in only one way, i.e., 19423996900 + 986965056 = 139370^2 + 31416^2 .

It is not an unprimeable number, because it can be changed into a prime (20410961959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 406605 + ... + 454036.

Almost surely, 2^20410961956 is an apocalyptic number.

It is an amenable number.

20410961956 is an abundant number, since it is smaller than the sum of its proper divisors (25260727058).

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

20410961956 is a wasteful number, since it uses less digits than its factorization.

20410961956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860681 (or 860661 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 20410961956 in words is "twenty billion, four hundred ten million, nine hundred sixty-one thousand, nine hundred fifty-six".