1651500015156 has 120 divisors (see below), whose sum is σ = 4343160077256. Its totient is φ = 547211427840.

The previous prime is 1651500015127. The next prime is 1651500015161. The reversal of 1651500015156 is 6515100051561.

It is a happy number.

1651500015156 is a `hidden beast` number, since 1 + 6 + 51 + 500 + 0 + 1 + 51 + 56 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9232135056 + 1642267880100 = 96084^2 + 1281510^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1651500015156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 167540980 + ... + 167550836.

Almost surely, 2^{1651500015156} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1651500015156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171580038628).

1651500015156 is an abundant number, since it is smaller than the sum of its proper divisors (2691660062100).

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

1651500015156 is a wasteful number, since it uses less digits than its factorization.

1651500015156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12911 (or 12900 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 1651500015156 in words is "one trillion, six hundred fifty-one billion, five hundred million, fifteen thousand, one hundred fifty-six".