8122656261 has 16 divisors (see below), whose sum is σ = 10916931584. Its totient is φ = 5371866864.

The previous prime is 8122656259. The next prime is 8122656263. The reversal of 8122656261 is 1626562218.

It is an interprime number because it is at equal distance from previous prime (8122656259) and next prime (8122656263).

It is not a de Polignac number, because 8122656261 - 2¹ = 8122656259 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 (8122656263) 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, 252300 + ... + 282666.

It is an arithmetic number, because the mean of its divisors is an integer number (682308224).

Almost surely, 2^8122656261 is an apocalyptic number.

It is an amenable number.

8122656261 is a deficient number, since it is larger than the sum of its proper divisors (2794275323).

8122656261 is a wasteful number, since it uses less digits than its factorization.

8122656261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31080.

The product of its digits is 69120, while the sum is 39.

The square root of 8122656261 is about 90125.7802240846. The cubic root of 8122656261 is about 2010.1695574890.

The spelling of 8122656261 in words is "eight billion, one hundred twenty-two million, six hundred fifty-six thousand, two hundred sixty-one".