51085823190 has 64 divisors (see below), whose sum is σ = 128983622400. Its totient is φ = 12930184064.

The previous prime is 51085823189. The next prime is 51085823197. The reversal of 51085823190 is 9132858015.

It is a super-2 number, since 2×51085823190² (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 (51085823197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446292 + ... + 548951.

It is an arithmetic number, because the mean of its divisors is an integer number (2015369100).

Almost surely, 2^51085823190 is an apocalyptic number.

51085823190 is an abundant number, since it is smaller than the sum of its proper divisors (77897799210).

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

51085823190 is a wasteful number, since it uses less digits than its factorization.

51085823190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995341.

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 51085823190 in words is "fifty-one billion, eighty-five million, eight hundred twenty-three thousand, one hundred ninety".