2161451116654 has 32 divisors (see below), whose sum is σ = 3402345954240. Its totient is φ = 1028420467200.

The previous prime is 2161451116633. The next prime is 2161451116681. The reversal of 2161451116654 is 4566111541612.

It is a self number, because there is not a number n which added to its sum of digits gives 2161451116654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12519462 + ... + 12690934.

It is an arithmetic number, because the mean of its divisors is an integer number (106323311070).

Almost surely, 2^{2161451116654} is an apocalyptic number.

2161451116654 is a deficient number, since it is larger than the sum of its proper divisors (1240894837586).

2161451116654 is a wasteful number, since it uses less digits than its factorization.

2161451116654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174636.

The product of its digits is 172800, while the sum is 43.

The spelling of 2161451116654 in words is "two trillion, one hundred sixty-one billion, four hundred fifty-one million, one hundred sixteen thousand, six hundred fifty-four".