2691658893164 has 24 divisors (see below), whose sum is σ = 4733225800128. Its totient is φ = 1339324398720.

The previous prime is 2691658893149. The next prime is 2691658893181. The reversal of 2691658893164 is 4613988561962.

It is a junction number, because it is equal to n+sod(n) for n = 2691658893094 and 2691658893103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281929 + ... + 2650784.

It is an arithmetic number, because the mean of its divisors is an integer number (197217741672).

Almost surely, 2^{2691658893164} is an apocalyptic number.

It is an amenable number.

2691658893164 is a deficient number, since it is larger than the sum of its proper divisors (2041566906964).

2691658893164 is a wasteful number, since it uses less digits than its factorization.

2691658893164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3933545 (or 3933543 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 68.

The spelling of 2691658893164 in words is "two trillion, six hundred ninety-one billion, six hundred fifty-eight million, eight hundred ninety-three thousand, one hundred sixty-four".