2151568327140 has 60 divisors (see below), whose sum is σ = 6749549535036. Its totient is φ = 573751553472.

The previous prime is 2151568327123. The next prime is 2151568327151. The reversal of 2151568327140 is 417238651512.

2151568327140 is a `hidden beast` number, since 2 + 1 + 51 + 568 + 3 + 27 + 14 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1254592647396 + 896975679744 = 1120086^2 + 947088^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 664062679 + ... + 664065918.

Almost surely, 2^{2151568327140} is an apocalyptic number.

2151568327140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151568327140 is an abundant number, since it is smaller than the sum of its proper divisors (4597981207896).

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

2151568327140 is a wasteful number, since it uses less digits than its factorization.

2151568327140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328128618 (or 1328128607 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 2151568327140 in words is "two trillion, one hundred fifty-one billion, five hundred sixty-eight million, three hundred twenty-seven thousand, one hundred forty".