51651191592 has 1152 divisors, whose sum is σ = 208210329600. Its totient is φ = 11639738880.

The previous prime is 51651191591. The next prime is 51651191593. The reversal of 51651191592 is 29519115615.

51651191592 is a `hidden beast` number, since 5 + 1 + 6 + 51 + 1 + 9 + 1 + 592 = 666.

It is an interprime number because it is at equal distance from previous prime (51651191591) and next prime (51651191593).

It is not an unprimeable number, because it can be changed into a prime (51651191591) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 406702233 + ... + 406702359.

Almost surely, 2^51651191592 is an apocalyptic number.

51651191592 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51651191592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104105164800).

51651191592 is an abundant number, since it is smaller than the sum of its proper divisors (156559138008).

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

51651191592 is a wasteful number, since it uses less digits than its factorization.

51651191592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 182 counting only the distinct ones).

The product of its digits is 121500, while the sum is 45.

The spelling of 51651191592 in words is "fifty-one billion, six hundred fifty-one million, one hundred ninety-one thousand, five hundred ninety-two".