51494543274 has 32 divisors (see below), whose sum is σ = 109018134720. Its totient is φ = 16187536512.

The previous prime is 51494543257. The next prime is 51494543279. The reversal of 51494543274 is 47234549415.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51494543279) 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, 3433747 + ... + 3448710.

It is an arithmetic number, because the mean of its divisors is an integer number (3406816710).

Almost surely, 2^51494543274 is an apocalyptic number.

51494543274 is an abundant number, since it is smaller than the sum of its proper divisors (57523591446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51494543274 is a wasteful number, since it uses less digits than its factorization.

51494543274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882534.

The product of its digits is 2419200, while the sum is 48.

The spelling of 51494543274 in words is "fifty-one billion, four hundred ninety-four million, five hundred forty-three thousand, two hundred seventy-four".