51355288037784 has 64 divisors (see below), whose sum is σ = 130156866979200. Its totient is φ = 16882645453056.

The previous prime is 51355288037771. The next prime is 51355288037819. The reversal of 51355288037784 is 48773088255315.

It is a happy number.

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, 22050967 + ... + 24268409.

It is an arithmetic number, because the mean of its divisors is an integer number (2033701046550).

Almost surely, 2^{51355288037784} is an apocalyptic number.

It is an amenable number.

51355288037784 is an abundant number, since it is smaller than the sum of its proper divisors (78801578941416).

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

51355288037784 is a wasteful number, since it uses less digits than its factorization.

51355288037784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230744 (or 2230740 counting only the distinct ones).

The product of its (nonzero) digits is 225792000, while the sum is 66.

The spelling of 51355288037784 in words is "fifty-one trillion, three hundred fifty-five billion, two hundred eighty-eight million, thirty-seven thousand, seven hundred eighty-four".