16661172511710 has 24 divisors (see below), whose sum is σ = 43319048530680. Its totient is φ = 4442979336432.

The previous prime is 16661172511699. The next prime is 16661172511721. The reversal of 16661172511710 is 1711527116661.

It is an interprime number because it is at equal distance from previous prime (16661172511699) and next prime (16661172511721).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92562069420 + ... + 92562069599.

It is an arithmetic number, because the mean of its divisors is an integer number (1804960355445).

Almost surely, 2^{16661172511710} is an apocalyptic number.

16661172511710 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16661172511710 is an abundant number, since it is smaller than the sum of its proper divisors (26657876018970).

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

16661172511710 is a wasteful number, since it uses less digits than its factorization.

16661172511710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185124139032 (or 185124139029 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 45.

The spelling of 16661172511710 in words is "sixteen trillion, six hundred sixty-one billion, one hundred seventy-two million, five hundred eleven thousand, seven hundred ten".