2109697318458 has 48 divisors (see below), whose sum is σ = 4579939293696. Its totient is φ = 701859238560.

The previous prime is 2109697318439. The next prime is 2109697318489. The reversal of 2109697318458 is 8548137969012.

2109697318458 is a `hidden beast` number, since 2 + 1 + 0 + 96 + 97 + 3 + 1 + 8 + 458 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2109697318395 and 2109697318404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85639803 + ... + 85664433.

It is an arithmetic number, because the mean of its divisors is an integer number (95415401952).

It is a 1-persistent number, because it is pandigital, but 2⋅2109697318458 = 4219394636916 is not.

Almost surely, 2^{2109697318458} is an apocalyptic number.

2109697318458 is an abundant number, since it is smaller than the sum of its proper divisors (2470241975238).

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

2109697318458 is a wasteful number, since it uses less digits than its factorization.

2109697318458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33739 (or 33736 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 2109697318458 in words is "two trillion, one hundred nine billion, six hundred ninety-seven million, three hundred eighteen thousand, four hundred fifty-eight".