2136445761 has 16 divisors (see below), whose sum is σ = 2897110208. Its totient is φ = 1400068800.

The previous prime is 2136445757. The next prime is 2136445793. The reversal of 2136445761 is 1675446312.

It is a happy number.

It is not a de Polignac number, because 2136445761 - 2² = 2136445757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136445711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425910 + ... + 430896.

It is an arithmetic number, because the mean of its divisors is an integer number (181069388).

Almost surely, 2^2136445761 is an apocalyptic number.

It is an amenable number.

2136445761 is a deficient number, since it is larger than the sum of its proper divisors (760664447).

2136445761 is a wasteful number, since it uses less digits than its factorization.

2136445761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392.

The product of its digits is 120960, while the sum is 39.

The square root of 2136445761 is about 46221.7022728501. The cubic root of 2136445761 is about 1287.9449202379.

The spelling of 2136445761 in words is "two billion, one hundred thirty-six million, four hundred forty-five thousand, seven hundred sixty-one".