2137476561 has 16 divisors (see below), whose sum is σ = 3111161088. Its totient is φ = 1294563600.

The previous prime is 2137476553. The next prime is 2137476563. The reversal of 2137476561 is 1656747312.

It is a happy number.

It is not a de Polignac number, because 2137476561 - 2³ = 2137476553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2137476563) 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, 29370 + ... + 71676.

It is an arithmetic number, because the mean of its divisors is an integer number (194447568).

Almost surely, 2^2137476561 is an apocalyptic number.

It is an amenable number.

2137476561 is a deficient number, since it is larger than the sum of its proper divisors (973684527).

2137476561 is a wasteful number, since it uses less digits than its factorization.

2137476561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43852.

The product of its digits is 211680, while the sum is 42.

The square root of 2137476561 is about 46232.8515343797. The cubic root of 2137476561 is about 1288.1520243589.

The spelling of 2137476561 in words is "two billion, one hundred thirty-seven million, four hundred seventy-six thousand, five hundred sixty-one".