2166387141770 has 64 divisors (see below), whose sum is σ = 3981949632000. Its totient is φ = 848307373056.

The previous prime is 2166387141757. The next prime is 2166387141799. The reversal of 2166387141770 is 771417836612.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830350226 + ... + 830352834.

It is an arithmetic number, because the mean of its divisors is an integer number (62217963000).

Almost surely, 2^{2166387141770} is an apocalyptic number.

2166387141770 is a deficient number, since it is larger than the sum of its proper divisors (1815562490230).

2166387141770 is a wasteful number, since it uses less digits than its factorization.

2166387141770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567.

The product of its (nonzero) digits is 2370816, while the sum is 53.

The spelling of 2166387141770 in words is "two trillion, one hundred sixty-six billion, three hundred eighty-seven million, one hundred forty-one thousand, seven hundred seventy".