51435012402 has 48 divisors (see below), whose sum is σ = 114449811840. Its totient is φ = 16686423456.

The previous prime is 51435012383. The next prime is 51435012437. The reversal of 51435012402 is 20421053415.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18393 + ... + 321260.

It is an arithmetic number, because the mean of its divisors is an integer number (2384371080).

Almost surely, 2^51435012402 is an apocalyptic number.

51435012402 is an abundant number, since it is smaller than the sum of its proper divisors (63014799438).

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

51435012402 is a wasteful number, since it uses less digits than its factorization.

51435012402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339887 (or 339884 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 51435012402 its reverse (20421053415), we get a palindrome (71856065817).

The spelling of 51435012402 in words is "fifty-one billion, four hundred thirty-five million, twelve thousand, four hundred two".