22315415261 has 4 divisors (see below), whose sum is σ = 22859693724. Its totient is φ = 21771136800.

The previous prime is 22315415207. The next prime is 22315415351. The reversal of 22315415261 is 16251451322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11364839236 + 10950576025 = 106606^2 + 104645^2 .

It is a cyclic number.

It is not a de Polignac number, because 22315415261 - 2⁶ = 22315415197 is a prime.

It is a super-3 number, since 3×22315415261³ (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 (22315415201) 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, 272139170 + ... + 272139251.

It is an arithmetic number, because the mean of its divisors is an integer number (5714923431).

Almost surely, 2^22315415261 is an apocalyptic number.

It is an amenable number.

22315415261 is a deficient number, since it is larger than the sum of its proper divisors (544278463).

22315415261 is an equidigital number, since it uses as much as digits as its factorization.

22315415261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544278462.

The product of its digits is 14400, while the sum is 32.

Adding to 22315415261 its reverse (16251451322), we get a palindrome (38566866583).

The spelling of 22315415261 in words is "twenty-two billion, three hundred fifteen million, four hundred fifteen thousand, two hundred sixty-one".