51542301144 has 32 divisors (see below), whose sum is σ = 131286996720. Its totient is φ = 16856601216.

The previous prime is 51542301137. The next prime is 51542301163. The reversal of 51542301144 is 44110324515.

It is a congruent 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, 20259067 + ... + 20261610.

Almost surely, 2^51542301144 is an apocalyptic number.

It is an amenable number.

51542301144 is an abundant number, since it is smaller than the sum of its proper divisors (79744695576).

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

51542301144 is a wasteful number, since it uses less digits than its factorization.

51542301144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40520739 (or 40520735 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 51542301144 its reverse (44110324515), we get a palindrome (95652625659).

The spelling of 51542301144 in words is "fifty-one billion, five hundred forty-two million, three hundred one thousand, one hundred forty-four".