51431312415 has 32 divisors (see below), whose sum is σ = 94976994816. Its totient is φ = 23278665600.

The previous prime is 51431312371. The next prime is 51431312441. The reversal of 51431312415 is 51421313415.

It is not a de Polignac number, because 51431312415 - 2¹⁶ = 51431246879 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2414257 + ... + 2435466.

It is an arithmetic number, because the mean of its divisors is an integer number (2968031088).

Almost surely, 2^51431312415 is an apocalyptic number.

51431312415 is a deficient number, since it is larger than the sum of its proper divisors (43545682401).

51431312415 is a wasteful number, since it uses less digits than its factorization.

51431312415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849839.

The product of its digits is 7200, while the sum is 30.

The spelling of 51431312415 in words is "fifty-one billion, four hundred thirty-one million, three hundred twelve thousand, four hundred fifteen".