8561122953 has 4 divisors (see below), whose sum is σ = 11414830608. Its totient is φ = 5707415300.

The previous prime is 8561122919. The next prime is 8561122963. The reversal of 8561122953 is 3592211658.

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 8561122953 - 2⁸ = 8561122697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8561122963) 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, 1426853823 + ... + 1426853828.

It is an arithmetic number, because the mean of its divisors is an integer number (2853707652).

Almost surely, 2^8561122953 is an apocalyptic number.

It is an amenable number.

8561122953 is a deficient number, since it is larger than the sum of its proper divisors (2853707655).

8561122953 is a wasteful number, since it uses less digits than its factorization.

8561122953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853707654.

The product of its digits is 129600, while the sum is 42.

The square root of 8561122953 is about 92526.3365372260. The cubic root of 8561122953 is about 2045.7076918532.

The spelling of 8561122953 in words is "eight billion, five hundred sixty-one million, one hundred twenty-two thousand, nine hundred fifty-three".