51504033933693 has 32 divisors (see below), whose sum is σ = 83239330965120. Its totient is φ = 31214382929280.

The previous prime is 51504033933679. The next prime is 51504033933757. The reversal of 51504033933693 is 39633933040515.

It is a happy number.

51504033933693 is a `hidden beast` number, since 5 + 150 + 40 + 3 + 3 + 93 + 369 + 3 = 666.

It is not a de Polignac number, because 51504033933693 - 2¹⁰ = 51504033932669 is a prime.

It is a super-2 number, since 2×51504033933693² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504033933593) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63934971 + ... + 64735527.

It is an arithmetic number, because the mean of its divisors is an integer number (2601229092660).

Almost surely, 2^{51504033933693} is an apocalyptic number.

It is an amenable number.

51504033933693 is a deficient number, since it is larger than the sum of its proper divisors (31735297031427).

51504033933693 is a wasteful number, since it uses less digits than its factorization.

51504033933693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017194 (or 1017188 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 54.

The spelling of 51504033933693 in words is "fifty-one trillion, five hundred four billion, thirty-three million, nine hundred thirty-three thousand, six hundred ninety-three".