2151431440730 has 96 divisors (see below), whose sum is σ = 4607109360000. Its totient is φ = 718528821120.

The previous prime is 2151431440687. The next prime is 2151431440819. The reversal of 2151431440730 is 370441341512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2786621 + ... + 3473919.

It is an arithmetic number, because the mean of its divisors is an integer number (47990722500).

Almost surely, 2^{2151431440730} is an apocalyptic number.

2151431440730 is an abundant number, since it is smaller than the sum of its proper divisors (2455677919270).

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

2151431440730 is a wasteful number, since it uses less digits than its factorization.

2151431440730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687540 (or 687529 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 2151431440730 in words is "two trillion, one hundred fifty-one billion, four hundred thirty-one million, four hundred forty thousand, seven hundred thirty".