2159136777 has 8 divisors (see below), whose sum is σ = 3290113216. Its totient is φ = 1233792432.

The previous prime is 2159136761. The next prime is 2159136787. The reversal of 2159136777 is 7776319512.

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

It is not a de Polignac number, because 2159136777 - 2⁴ = 2159136761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2159136757) 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, 51407998 + ... + 51408039.

It is an arithmetic number, because the mean of its divisors is an integer number (411264152).

Almost surely, 2^2159136777 is an apocalyptic number.

It is an amenable number.

2159136777 is a deficient number, since it is larger than the sum of its proper divisors (1130976439).

2159136777 is a wasteful number, since it uses less digits than its factorization.

2159136777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102816047.

The product of its digits is 555660, while the sum is 48.

The square root of 2159136777 is about 46466.5124256168. The cubic root of 2159136777 is about 1292.4885912991.

The spelling of 2159136777 in words is "two billion, one hundred fifty-nine million, one hundred thirty-six thousand, seven hundred seventy-seven".