8315961261 has 8 divisors (see below), whose sum is σ = 11088883584. Its totient is φ = 5543506560.

The previous prime is 8315961257. The next prime is 8315961301. The reversal of 8315961261 is 1621695138.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8315961261 - 2² = 8315961257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8315963261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73060 + ... + 148221.

It is an arithmetic number, because the mean of its divisors is an integer number (1386110448).

Almost surely, 2^8315961261 is an apocalyptic number.

It is an amenable number.

8315961261 is a deficient number, since it is larger than the sum of its proper divisors (2772922323).

8315961261 is a wasteful number, since it uses less digits than its factorization.

8315961261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233811.

The product of its digits is 77760, while the sum is 42.

The square root of 8315961261 is about 91191.8925179207. The cubic root of 8315961261 is about 2025.9908790604.

The spelling of 8315961261 in words is "eight billion, three hundred fifteen million, nine hundred sixty-one thousand, two hundred sixty-one".