22315456661 has 16 divisors (see below), whose sum is σ = 23992680000. Its totient is φ = 20691645696.

The previous prime is 22315456649. The next prime is 22315456673. The reversal of 22315456661 is 16665451322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22315456649) and next prime (22315456673).

It is a de Polignac number, because none of the positive numbers 2^k-22315456661 is a prime.

It is a super-3 number, since 3×22315456661³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22315456061) 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, 213245 + ... + 300173.

It is an arithmetic number, because the mean of its divisors is an integer number (1499542500).

Almost surely, 2^22315456661 is an apocalyptic number.

It is an amenable number.

22315456661 is a deficient number, since it is larger than the sum of its proper divisors (1677223339).

22315456661 is a wasteful number, since it uses less digits than its factorization.

22315456661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87236.

The product of its digits is 259200, while the sum is 41.

The spelling of 22315456661 in words is "twenty-two billion, three hundred fifteen million, four hundred fifty-six thousand, six hundred sixty-one".