8651237961 has 4 divisors (see below), whose sum is σ = 11534983952. Its totient is φ = 5767491972.

The previous prime is 8651237951. The next prime is 8651237977. The reversal of 8651237961 is 1697321568.

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 not a de Polignac number, because 8651237961 - 2⁵ = 8651237929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8651237961.

It is not an unprimeable number, because it can be changed into a prime (8651237951) 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, 1441872991 + ... + 1441872996.

It is an arithmetic number, because the mean of its divisors is an integer number (2883745988).

Almost surely, 2^8651237961 is an apocalyptic number.

It is an amenable number.

8651237961 is a deficient number, since it is larger than the sum of its proper divisors (2883745991).

8651237961 is a wasteful number, since it uses less digits than its factorization.

8651237961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883745990.

The product of its digits is 544320, while the sum is 48.

The square root of 8651237961 is about 93012.0312701534. The cubic root of 8651237961 is about 2052.8604099650.

The spelling of 8651237961 in words is "eight billion, six hundred fifty-one million, two hundred thirty-seven thousand, nine hundred sixty-one".