20955376040 has 32 divisors (see below), whose sum is σ = 47261628360. Its totient is φ = 8362233600.

The previous prime is 20955376037. The next prime is 20955376049. The reversal of 20955376040 is 4067355902.

It can be written as a sum of positive squares in 4 ways, for example, as 16830910756 + 4124465284 = 129734^2 + 64222^2 .

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20955376049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605351 + ... + 639030.

Almost surely, 2^20955376040 is an apocalyptic number.

20955376040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20955376040 is an abundant number, since it is smaller than the sum of its proper divisors (26306252320).

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

20955376040 is a wasteful number, since it uses less digits than its factorization.

20955376040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244813 (or 1244809 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The spelling of 20955376040 in words is "twenty billion, nine hundred fifty-five million, three hundred seventy-six thousand, forty".