51940979480 has 64 divisors (see below), whose sum is σ = 125882920800. Its totient is φ = 19174256640.

The previous prime is 51940979473. The next prime is 51940979533. The reversal of 51940979480 is 8497904915.

51940979480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4070951 + ... + 4083689.

Almost surely, 2^51940979480 is an apocalyptic number.

It is an amenable number.

51940979480 is an abundant number, since it is smaller than the sum of its proper divisors (73941941320).

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

51940979480 is a wasteful number, since it uses less digits than its factorization.

51940979480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20604 (or 20600 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 51940979480 in words is "fifty-one billion, nine hundred forty million, nine hundred seventy-nine thousand, four hundred eighty".