2109776957618 has 8 divisors (see below), whose sum is σ = 3452362294320. Its totient is φ = 958989526180.

The previous prime is 2109776957609. The next prime is 2109776957693. The reversal of 2109776957618 is 8167596779012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47949476288 + ... + 47949476331.

It is an arithmetic number, because the mean of its divisors is an integer number (431545286790).

Almost surely, 2^{2109776957618} is an apocalyptic number.

2109776957618 is a deficient number, since it is larger than the sum of its proper divisors (1342585336702).

2109776957618 is a wasteful number, since it uses less digits than its factorization.

2109776957618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95898952632.

The product of its (nonzero) digits is 80015040, while the sum is 68.

The spelling of 2109776957618 in words is "two trillion, one hundred nine billion, seven hundred seventy-six million, nine hundred fifty-seven thousand, six hundred eighteen".