51388397754 has 16 divisors (see below), whose sum is σ = 102779121792. Its totient is φ = 17129078208.

The previous prime is 51388397743. The next prime is 51388397771. The reversal of 51388397754 is 45779388315.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345807 + ... + 471549.

It is an arithmetic number, because the mean of its divisors is an integer number (6423695112).

Almost surely, 2^51388397754 is an apocalyptic number.

51388397754 is an abundant number, since it is smaller than the sum of its proper divisors (51390724038).

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

51388397754 is a wasteful number, since it uses less digits than its factorization.

51388397754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193861.

The product of its digits is 25401600, while the sum is 60.

The spelling of 51388397754 in words is "fifty-one billion, three hundred eighty-eight million, three hundred ninety-seven thousand, seven hundred fifty-four".