51153205240 has 32 divisors (see below), whose sum is σ = 121152330000. Its totient is φ = 19384372224.

The previous prime is 51153205237. The next prime is 51153205409. The reversal of 51153205240 is 4250235115.

It is a junction number, because it is equal to n+sod(n) for n = 51153205199 and 51153205208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33652665 + ... + 33654184.

Almost surely, 2^51153205240 is an apocalyptic number.

It is an amenable number.

51153205240 is an abundant number, since it is smaller than the sum of its proper divisors (69999124760).

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

51153205240 is a wasteful number, since it uses less digits than its factorization.

51153205240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67306879 (or 67306875 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 51153205240 in words is "fifty-one billion, one hundred fifty-three million, two hundred five thousand, two hundred forty".