22730006331561 has 4 divisors (see below), whose sum is σ = 30306675108752. Its totient is φ = 15153337554372.

The previous prime is 22730006331559. The next prime is 22730006331667. The reversal of 22730006331561 is 16513360003722.

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 22730006331561 - 2¹ = 22730006331559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22730006331521) 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, 3788334388591 + ... + 3788334388596.

It is an arithmetic number, because the mean of its divisors is an integer number (7576668777188).

Almost surely, 2^{22730006331561} is an apocalyptic number.

It is an amenable number.

22730006331561 is a deficient number, since it is larger than the sum of its proper divisors (7576668777191).

22730006331561 is an equidigital number, since it uses as much as digits as its factorization.

22730006331561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7576668777190.

The product of its (nonzero) digits is 136080, while the sum is 39.

The spelling of 22730006331561 in words is "twenty-two trillion, seven hundred thirty billion, six million, three hundred thirty-one thousand, five hundred sixty-one".