2736149561 has 4 divisors (see below), whose sum is σ = 2736624000. Its totient is φ = 2735675124.

The previous prime is 2736149557. The next prime is 2736149627. The reversal of 2736149561 is 1659416372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2736149561 - 2² = 2736149557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2736149461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228461 + ... + 240138.

It is an arithmetic number, because the mean of its divisors is an integer number (684156000).

Almost surely, 2^2736149561 is an apocalyptic number.

It is an amenable number.

2736149561 is a deficient number, since it is larger than the sum of its proper divisors (474439).

2736149561 is an equidigital number, since it uses as much as digits as its factorization.

2736149561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474438.

The product of its digits is 272160, while the sum is 44.

The square root of 2736149561 is about 52308.2169548915. The cubic root of 2736149561 is about 1398.6636160739.

The spelling of 2736149561 in words is "two billion, seven hundred thirty-six million, one hundred forty-nine thousand, five hundred sixty-one".