51256156343 has 24 divisors (see below), whose sum is σ = 61750083600. Its totient is φ = 42371054208.

The previous prime is 51256156331. The next prime is 51256156349. The reversal of 51256156343 is 34365165215.

It is not a de Polignac number, because 51256156343 - 2⁴ = 51256156327 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 51256156343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51256156349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1268963 + ... + 1308731.

It is an arithmetic number, because the mean of its divisors is an integer number (2572920150).

Almost surely, 2^51256156343 is an apocalyptic number.

51256156343 is a deficient number, since it is larger than the sum of its proper divisors (10493927257).

51256156343 is a wasteful number, since it uses less digits than its factorization.

51256156343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40719 (or 40712 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The spelling of 51256156343 in words is "fifty-one billion, two hundred fifty-six million, one hundred fifty-six thousand, three hundred forty-three".