2136442777 has 12 divisors (see below), whose sum is σ = 2486014416. Its totient is φ = 1830673320.

The previous prime is 2136442771. The next prime is 2136442807. The reversal of 2136442777 is 7772446312.

It is a de Polignac number, because none of the positive numbers 2^k-2136442777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136442771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267078 + ... + 274960.

It is an arithmetic number, because the mean of its divisors is an integer number (207167868).

Almost surely, 2^2136442777 is an apocalyptic number.

It is an amenable number.

2136442777 is a deficient number, since it is larger than the sum of its proper divisors (349571639).

2136442777 is an equidigital number, since it uses as much as digits as its factorization.

2136442777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13428 (or 13421 counting only the distinct ones).

The product of its digits is 395136, while the sum is 43.

The square root of 2136442777 is about 46221.6699936296. The cubic root of 2136442777 is about 1287.9443206082.

The spelling of 2136442777 in words is "two billion, one hundred thirty-six million, four hundred forty-two thousand, seven hundred seventy-seven".