51245450156 has 12 divisors (see below), whose sum is σ = 89855729040. Its totient is φ = 25572384720.

The previous prime is 51245450153. The next prime is 51245450159. The reversal of 51245450156 is 65105454215.

It is an interprime number because it is at equal distance from previous prime (51245450153) and next prime (51245450159).

It is not an unprimeable number, because it can be changed into a prime (51245450153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12582800 + ... + 12586871.

It is an arithmetic number, because the mean of its divisors is an integer number (7487977420).

Almost surely, 2^51245450156 is an apocalyptic number.

It is an amenable number.

51245450156 is a deficient number, since it is larger than the sum of its proper divisors (38610278884).

51245450156 is a wasteful number, since it uses less digits than its factorization.

51245450156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25170184 (or 25170182 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 51245450156 in words is "fifty-one billion, two hundred forty-five million, four hundred fifty thousand, one hundred fifty-six".