51113031405 has 16 divisors (see below), whose sum is σ = 82168442304. Its totient is φ = 27131086080.

The previous prime is 51113031391. The next prime is 51113031439. The reversal of 51113031405 is 50413031115.

It is not a de Polignac number, because 51113031405 - 2¹⁸ = 51112769261 is a prime.

It is a super-2 number, since 2×51113031405² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8071564 + ... + 8077893.

It is an arithmetic number, because the mean of its divisors is an integer number (5135527644).

Almost surely, 2^51113031405 is an apocalyptic number.

It is an amenable number.

51113031405 is a deficient number, since it is larger than the sum of its proper divisors (31055410899).

51113031405 is a wasteful number, since it uses less digits than its factorization.

51113031405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16149676.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 51113031405 in words is "fifty-one billion, one hundred thirteen million, thirty-one thousand, four hundred five".