51189823190 has 48 divisors (see below), whose sum is σ = 107237372256. Its totient is φ = 17519504640.

The previous prime is 51189823177. The next prime is 51189823211. The reversal of 51189823190 is 9132898115.

It is a happy number.

It is a super-2 number, since 2×51189823190² (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 23 ways as a sum of consecutive naturals, for example, 1223714 + ... + 1264853.

It is an arithmetic number, because the mean of its divisors is an integer number (2234111922).

Almost surely, 2^51189823190 is an apocalyptic number.

51189823190 is an abundant number, since it is smaller than the sum of its proper divisors (56047549066).

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

51189823190 is a wasteful number, since it uses less digits than its factorization.

51189823190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488613 (or 2488602 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 51189823190 in words is "fifty-one billion, one hundred eighty-nine million, eight hundred twenty-three thousand, one hundred ninety".