51103513879 has 16 divisors (see below), whose sum is σ = 56820196224. Its totient is φ = 45565904800.

The previous prime is 51103513843. The next prime is 51103513897. The reversal of 51103513879 is 97831530115.

It is a cyclic number.

It is not a de Polignac number, because 51103513879 - 2⁷ = 51103513751 is a prime.

It is a super-2 number, since 2×51103513879² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51103513379) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1952292 + ... + 1978294.

It is an arithmetic number, because the mean of its divisors is an integer number (3551262264).

Almost surely, 2^51103513879 is an apocalyptic number.

51103513879 is a deficient number, since it is larger than the sum of its proper divisors (5716682345).

51103513879 is a wasteful number, since it uses less digits than its factorization.

51103513879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29438.

The product of its (nonzero) digits is 113400, while the sum is 43.

The spelling of 51103513879 in words is "fifty-one billion, one hundred three million, five hundred thirteen thousand, eight hundred seventy-nine".