2156603677 has 8 divisors (see below), whose sum is σ = 2165796864. Its totient is φ = 2147429808.

The previous prime is 2156603627. The next prime is 2156603693. The reversal of 2156603677 is 7763066512.

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

It is a cyclic number.

It is not a de Polignac number, because 2156603677 - 2¹⁵ = 2156570909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156603627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245788 + ... + 254410.

It is an arithmetic number, because the mean of its divisors is an integer number (270724608).

Almost surely, 2^2156603677 is an apocalyptic number.

It is an amenable number.

2156603677 is a deficient number, since it is larger than the sum of its proper divisors (9193187).

2156603677 is an equidigital number, since it uses as much as digits as its factorization.

2156603677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9659.

The product of its (nonzero) digits is 317520, while the sum is 43.

The square root of 2156603677 is about 46439.2471622872. The cubic root of 2156603677 is about 1291.9829441543.

The spelling of 2156603677 in words is "two billion, one hundred fifty-six million, six hundred three thousand, six hundred seventy-seven".