51601886373 has 4 divisors (see below), whose sum is σ = 68802515168. Its totient is φ = 34401257580.

The previous prime is 51601886359. The next prime is 51601886381. The reversal of 51601886373 is 37368810615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51601886373 - 2¹⁷ = 51601755301 is a prime.

It is a super-3 number, since 3×51601886373³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51601886393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8600314393 + ... + 8600314398.

It is an arithmetic number, because the mean of its divisors is an integer number (17200628792).

Almost surely, 2^51601886373 is an apocalyptic number.

It is an amenable number.

51601886373 is a deficient number, since it is larger than the sum of its proper divisors (17200628795).

51601886373 is a wasteful number, since it uses less digits than its factorization.

51601886373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17200628794.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 51601886373 in words is "fifty-one billion, six hundred one million, eight hundred eighty-six thousand, three hundred seventy-three".