51425614643 has 16 divisors (see below), whose sum is σ = 59251936800. Its totient is φ = 44234138880.

The previous prime is 51425614637. The next prime is 51425614651. The reversal of 51425614643 is 34641652415.

It is a cyclic number.

It is not a de Polignac number, because 51425614643 - 2⁴ = 51425614627 is a prime.

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 51425614643.

It is not an unprimeable number, because it can be changed into a prime (51425614663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1691498 + ... + 1721631.

It is an arithmetic number, because the mean of its divisors is an integer number (3703246050).

Almost surely, 2^51425614643 is an apocalyptic number.

51425614643 is a deficient number, since it is larger than the sum of its proper divisors (7826322157).

51425614643 is a wasteful number, since it uses less digits than its factorization.

51425614643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3413222.

The product of its digits is 345600, while the sum is 41.

The spelling of 51425614643 in words is "fifty-one billion, four hundred twenty-five million, six hundred fourteen thousand, six hundred forty-three".