51356461740 has 48 divisors (see below), whose sum is σ = 143888179680. Its totient is φ = 13686476800.

The previous prime is 51356461657. The next prime is 51356461757. The reversal of 51356461740 is 4716465315.

It is a junction number, because it is equal to n+sod(n) for n = 51356461692 and 51356461701.

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, 171255 + ... + 363374.

It is an arithmetic number, because the mean of its divisors is an integer number (2997670410).

Almost surely, 2^51356461740 is an apocalyptic number.

It is an amenable number.

51356461740 is an abundant number, since it is smaller than the sum of its proper divisors (92531717940).

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

51356461740 is a wasteful number, since it uses less digits than its factorization.

51356461740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536242 (or 536240 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 51356461740 in words is "fifty-one billion, three hundred fifty-six million, four hundred sixty-one thousand, seven hundred forty".