51555302778810 has 16 divisors (see below), whose sum is σ = 123732726669216. Its totient is φ = 13748080741008.

The previous prime is 51555302778787. The next prime is 51555302778823. The reversal of 51555302778810 is 1887720355515.

It is a super-2 number, since 2×51555302778810² (a number of 28 digits) contains 22 as substring.

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, 859255046284 + ... + 859255046343.

It is an arithmetic number, because the mean of its divisors is an integer number (7733295416826).

Almost surely, 2^{51555302778810} is an apocalyptic number.

51555302778810 is an abundant number, since it is smaller than the sum of its proper divisors (72177423890406).

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

51555302778810 is a wasteful number, since it uses less digits than its factorization.

51555302778810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718510092637.

The product of its (nonzero) digits is 11760000, while the sum is 57.

The spelling of 51555302778810 in words is "fifty-one trillion, five hundred fifty-five billion, three hundred two million, seven hundred seventy-eight thousand, eight hundred ten".