51402722724865 has 16 divisors (see below), whose sum is σ = 62433106589952. Its totient is φ = 40623835359744.

The previous prime is 51402722724797. The next prime is 51402722724877. The reversal of 51402722724865 is 56842722720415.

It is a cyclic number.

It is not a de Polignac number, because 51402722724865 - 2³¹ = 51400575241217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96613129 + ... + 97143718.

It is an arithmetic number, because the mean of its divisors is an integer number (3902069161872).

Almost surely, 2^{51402722724865} is an apocalyptic number.

It is an amenable number.

51402722724865 is a deficient number, since it is larger than the sum of its proper divisors (11030383865087).

51402722724865 is a wasteful number, since it uses less digits than its factorization.

51402722724865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193757496.

The product of its (nonzero) digits is 15052800, while the sum is 55.

The spelling of 51402722724865 in words is "fifty-one trillion, four hundred two billion, seven hundred twenty-two million, seven hundred twenty-four thousand, eight hundred sixty-five".