51131520334 has 16 divisors (see below), whose sum is σ = 79298856000. Its totient is φ = 24707843424.

The previous prime is 51131520257. The next prime is 51131520343. The reversal of 51131520334 is 43302513115.

It is a happy number.

It is a super-2 number, since 2×51131520334² (a number of 22 digits) contains 22 as substring.

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, 2307654 + ... + 2329705.

It is an arithmetic number, because the mean of its divisors is an integer number (4956178500).

Almost surely, 2^51131520334 is an apocalyptic number.

51131520334 is a deficient number, since it is larger than the sum of its proper divisors (28167335666).

51131520334 is a wasteful number, since it uses less digits than its factorization.

51131520334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637547.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 51131520334 in words is "fifty-one billion, one hundred thirty-one million, five hundred twenty thousand, three hundred thirty-four".