51240761262 has 24 divisors (see below), whose sum is σ = 111285375240. Its totient is φ = 17039680560.

The previous prime is 51240761251. The next prime is 51240761269. The reversal of 51240761262 is 26216704215.

It is a happy number.

51240761262 is a `hidden beast` number, since 512 + 4 + 0 + 76 + 12 + 62 = 666.

It is a super-2 number, since 2×51240761262² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51240761269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3373312 + ... + 3388467.

It is an arithmetic number, because the mean of its divisors is an integer number (4636890635).

Almost surely, 2^51240761262 is an apocalyptic number.

51240761262 is an abundant number, since it is smaller than the sum of its proper divisors (60044613978).

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

51240761262 is a wasteful number, since it uses less digits than its factorization.

51240761262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6762208 (or 6762205 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 51240761262 in words is "fifty-one billion, two hundred forty million, seven hundred sixty-one thousand, two hundred sixty-two".