51386784090031 has 8 divisors (see below), whose sum is σ = 55346210440640. Its totient is φ = 47428300140192.

The previous prime is 51386784090011. The next prime is 51386784090073. The reversal of 51386784090031 is 13009048768315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51386784090031 - 2⁴⁵ = 16202412001199 is a prime.

It is a super-2 number, since 2×51386784090031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51386784090011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235486935 + ... + 235705048.

It is an arithmetic number, because the mean of its divisors is an integer number (6918276305080).

Almost surely, 2^{51386784090031} is an apocalyptic number.

51386784090031 is a deficient number, since it is larger than the sum of its proper divisors (3959426350609).

51386784090031 is a wasteful number, since it uses less digits than its factorization.

51386784090031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471200385.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 51386784090031 in words is "fifty-one trillion, three hundred eighty-six billion, seven hundred eighty-four million, ninety thousand, thirty-one".