2147989314564 has 18 divisors (see below), whose sum is σ = 5429639656350. Its totient is φ = 715996438176.

The previous prime is 2147989314547. The next prime is 2147989314587. The reversal of 2147989314564 is 4654139897412.

2147989314564 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 98 + 93 + 1 + 456 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1297890562500 + 850098752064 = 1139250^2 + 922008^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2147989314564² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29833184889 + ... + 29833184960.

It is an arithmetic number, because the mean of its divisors is an integer number (301646647575).

Almost surely, 2^{2147989314564} is an apocalyptic number.

It is an amenable number.

2147989314564 is an abundant number, since it is smaller than the sum of its proper divisors (3281650341786).

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

2147989314564 is a wasteful number, since it uses less digits than its factorization.

2147989314564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59666369859 (or 59666369854 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The spelling of 2147989314564 in words is "two trillion, one hundred forty-seven billion, nine hundred eighty-nine million, three hundred fourteen thousand, five hundred sixty-four".