2672237561 has 4 divisors (see below), whose sum is σ = 3053985792. Its totient is φ = 2290489332.

The previous prime is 2672237551. The next prime is 2672237591. The reversal of 2672237561 is 1657322762.

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 2672237561 - 2¹⁰ = 2672236537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2672237521) 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, 190874105 + ... + 190874118.

It is an arithmetic number, because the mean of its divisors is an integer number (763496448).

Almost surely, 2^2672237561 is an apocalyptic number.

It is an amenable number.

2672237561 is a deficient number, since it is larger than the sum of its proper divisors (381748231).

2672237561 is an equidigital number, since it uses as much as digits as its factorization.

2672237561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381748230.

The product of its digits is 211680, while the sum is 41.

The square root of 2672237561 is about 51693.6897599697. The cubic root of 2672237561 is about 1387.6875376300.

The spelling of 2672237561 in words is "two billion, six hundred seventy-two million, two hundred thirty-seven thousand, five hundred sixty-one".