51023471881243 has 16 divisors (see below), whose sum is σ = 51661352800512. Its totient is φ = 50389713900000.

The previous prime is 51023471881237. The next prime is 51023471881247. The reversal of 51023471881243 is 34218817432015.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51023471881243 - 2²⁹ = 51022935010331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51023471881247) 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, 87249768 + ... + 87832618.

It is an arithmetic number, because the mean of its divisors is an integer number (3228834550032).

Almost surely, 2^{51023471881243} is an apocalyptic number.

51023471881243 is a deficient number, since it is larger than the sum of its proper divisors (637880919269).

51023471881243 is a wasteful number, since it uses less digits than its factorization.

51023471881243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586386.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 51023471881243 in words is "fifty-one trillion, twenty-three billion, four hundred seventy-one million, eight hundred eighty-one thousand, two hundred forty-three".