51140869752 has 64 divisors (see below), whose sum is σ = 154711883520. Its totient is φ = 13752165888.

The previous prime is 51140869733. The next prime is 51140869781. The reversal of 51140869752 is 25796804115.

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 15 ways as a sum of consecutive naturals, for example, 8950378 + ... + 8956089.

It is an arithmetic number, because the mean of its divisors is an integer number (2417373180).

Almost surely, 2^51140869752 is an apocalyptic number.

It is an amenable number.

51140869752 is an abundant number, since it is smaller than the sum of its proper divisors (103571013768).

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

51140869752 is a wasteful number, since it uses less digits than its factorization.

51140869752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17906500 (or 17906496 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 51140869752 in words is "fifty-one billion, one hundred forty million, eight hundred sixty-nine thousand, seven hundred fifty-two".