51405176740 has 24 divisors (see below), whose sum is σ = 108130515192. Its totient is φ = 20527852800.

The previous prime is 51405176701. The next prime is 51405176783. The reversal of 51405176740 is 4767150415.

It can be written as a sum of positive squares in 4 ways, for example, as 29408134144 + 21997042596 = 171488^2 + 148314^2 .

It is a super-3 number, since 3×51405176740³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51405176693 and 51405176702.

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, 2126299 + ... + 2150338.

It is an arithmetic number, because the mean of its divisors is an integer number (4505438133).

Almost surely, 2^51405176740 is an apocalyptic number.

It is an amenable number.

51405176740 is an abundant number, since it is smaller than the sum of its proper divisors (56725338452).

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

51405176740 is a wasteful number, since it uses less digits than its factorization.

51405176740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4277247 (or 4277245 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 51405176740 in words is "fifty-one billion, four hundred five million, one hundred seventy-six thousand, seven hundred forty".