51761515206 has 16 divisors (see below), whose sum is σ = 108971611200. Its totient is φ = 16345741608.

The previous prime is 51761515177. The next prime is 51761515219. The reversal of 51761515206 is 60251516715.

It is a happy number.

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, 227024076 + ... + 227024303.

It is an arithmetic number, because the mean of its divisors is an integer number (6810725700).

Almost surely, 2^51761515206 is an apocalyptic number.

51761515206 is an abundant number, since it is smaller than the sum of its proper divisors (57210095994).

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

51761515206 is a wasteful number, since it uses less digits than its factorization.

51761515206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454048403.

The product of its (nonzero) digits is 63000, while the sum is 39.

The spelling of 51761515206 in words is "fifty-one billion, seven hundred sixty-one million, five hundred fifteen thousand, two hundred six".