51311142533400 has 96 divisors (see below), whose sum is σ = 159759147267600. Its totient is φ = 13623220339200.

The previous prime is 51311142533297. The next prime is 51311142533449. The reversal of 51311142533400 is 433524111315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186584371 + ... + 186859170.

Almost surely, 2^{51311142533400} is an apocalyptic number.

51311142533400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51311142533400 is an abundant number, since it is smaller than the sum of its proper divisors (108448004734200).

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

51311142533400 is a wasteful number, since it uses less digits than its factorization.

51311142533400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373443789 (or 373443780 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 51311142533400 its reverse (433524111315), we get a palindrome (51744666644715).

The spelling of 51311142533400 in words is "fifty-one trillion, three hundred eleven billion, one hundred forty-two million, five hundred thirty-three thousand, four hundred".