51744642246 has 24 divisors (see below), whose sum is σ = 122305518504. Its totient is φ = 15680194560.

The previous prime is 51744642197. The next prime is 51744642251. The reversal of 51744642246 is 64224644715.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130668091 + ... + 130668486.

It is an arithmetic number, because the mean of its divisors is an integer number (5096063271).

Almost surely, 2^51744642246 is an apocalyptic number.

51744642246 is an abundant number, since it is smaller than the sum of its proper divisors (70560876258).

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

51744642246 is a wasteful number, since it uses less digits than its factorization.

51744642246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261336596 (or 261336593 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 45.

The spelling of 51744642246 in words is "fifty-one billion, seven hundred forty-four million, six hundred forty-two thousand, two hundred forty-six".