2615971061 has 4 divisors (see below), whose sum is σ = 2853786624. Its totient is φ = 2378155500.

The previous prime is 2615971049. The next prime is 2615971063. The reversal of 2615971061 is 1601795162.

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 2615971061 - 2⁶ = 2615970997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2615971063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118907765 + ... + 118907786.

It is an arithmetic number, because the mean of its divisors is an integer number (713446656).

Almost surely, 2^2615971061 is an apocalyptic number.

It is an amenable number.

2615971061 is a deficient number, since it is larger than the sum of its proper divisors (237815563).

2615971061 is a wasteful number, since it uses less digits than its factorization.

2615971061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237815562.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 2615971061 is about 51146.5645082834. The cubic root of 2615971061 is about 1377.8786740263.

The spelling of 2615971061 in words is "two billion, six hundred fifteen million, nine hundred seventy-one thousand, sixty-one".