22615540361 has 2 divisors, whose sum is σ = 22615540362. Its totient is φ = 22615540360.

The previous prime is 22615540333. The next prime is 22615540411. The reversal of 22615540361 is 16304551622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20592250000 + 2023290361 = 143500^2 + 44981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22615540361 is a prime.

It is a super-2 number, since 2×22615540361² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22615540261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11307770180 + 11307770181.

It is an arithmetic number, because the mean of its divisors is an integer number (11307770181).

Almost surely, 2^22615540361 is an apocalyptic number.

It is an amenable number.

22615540361 is a deficient number, since it is larger than the sum of its proper divisors (1).

22615540361 is an equidigital number, since it uses as much as digits as its factorization.

22615540361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 22615540361 in words is "twenty-two billion, six hundred fifteen million, five hundred forty thousand, three hundred sixty-one".