51694375506038 has 16 divisors (see below), whose sum is σ = 80363682794160. Its totient is φ = 24909776186400.

The previous prime is 51694375506029. The next prime is 51694375506047. The reversal of 51694375506038 is 83060557349615.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51694375506029) and next prime (51694375506047).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823704608 + ... + 823767363.

It is an arithmetic number, because the mean of its divisors is an integer number (5022730174635).

Almost surely, 2^{51694375506038} is an apocalyptic number.

51694375506038 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51694375506038 is a deficient number, since it is larger than the sum of its proper divisors (28669307288122).

51694375506038 is a wasteful number, since it uses less digits than its factorization.

51694375506038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647472543.

The product of its (nonzero) digits is 81648000, while the sum is 62.

The spelling of 51694375506038 in words is "fifty-one trillion, six hundred ninety-four billion, three hundred seventy-five million, five hundred six thousand, thirty-eight".