51123231407 has 8 divisors (see below), whose sum is σ = 52811016192. Its totient is φ = 49437862200.

The previous prime is 51123231389. The next prime is 51123231449. The reversal of 51123231407 is 70413232115.

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 51123231407 - 2⁶ = 51123231343 is a prime.

It is a super-2 number, since 2×51123231407² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51123231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51123230407) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 560819 + ... + 645572.

It is an arithmetic number, because the mean of its divisors is an integer number (6601377024).

Almost surely, 2^51123231407 is an apocalyptic number.

51123231407 is a deficient number, since it is larger than the sum of its proper divisors (1687784785).

51123231407 is a wasteful number, since it uses less digits than its factorization.

51123231407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207789.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 51123231407 in words is "fifty-one billion, one hundred twenty-three million, two hundred thirty-one thousand, four hundred seven".