9609615557 has 2 divisors, whose sum is σ = 9609615558. Its totient is φ = 9609615556.

The previous prime is 9609615539. The next prime is 9609615641. The reversal of 9609615557 is 7555169069.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8019918916 + 1589696641 = 89554^2 + 39871^2 .

It is a cyclic number.

It is not a de Polignac number, because 9609615557 - 2²⁶ = 9542506693 is a prime.

It is a super-2 number, since 2×9609615557² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9609615499 and 9609615508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9609665557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4804807778 + 4804807779.

It is an arithmetic number, because the mean of its divisors is an integer number (4804807779).

Almost surely, 2^9609615557 is an apocalyptic number.

It is an amenable number.

9609615557 is a deficient number, since it is larger than the sum of its proper divisors (1).

9609615557 is an equidigital number, since it uses as much as digits as its factorization.

9609615557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2551500, while the sum is 53.

The square root of 9609615557 is about 98028.6466141403. The cubic root of 9609615557 is about 2126.0264886710.

The spelling of 9609615557 in words is "nine billion, six hundred nine million, six hundred fifteen thousand, five hundred fifty-seven".