2157176099 has 8 divisors (see below), whose sum is σ = 2324342832. Its totient is φ = 1990185120.

The previous prime is 2157176051. The next prime is 2157176101. The reversal of 2157176099 is 9906717512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2157176099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157176899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17864 + ... + 68069.

It is an arithmetic number, because the mean of its divisors is an integer number (290542854).

Almost surely, 2^2157176099 is an apocalyptic number.

2157176099 is a deficient number, since it is larger than the sum of its proper divisors (167166733).

2157176099 is a wasteful number, since it uses less digits than its factorization.

2157176099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87877.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 2157176099 is about 46445.4098808483. The cubic root of 2157176099 is about 1292.0972433253.

The spelling of 2157176099 in words is "two billion, one hundred fifty-seven million, one hundred seventy-six thousand, ninety-nine".