11651097617 has 2 divisors, whose sum is σ = 11651097618. Its totient is φ = 11651097616.

The previous prime is 11651097613. The next prime is 11651097697. The reversal of 11651097617 is 71679015611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11011564096 + 639533521 = 104936^2 + 25289^2 .

It is a cyclic number.

It is not a de Polignac number, because 11651097617 - 2² = 11651097613 is a prime.

It is not a weakly prime, because it can be changed into another prime (11651097613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825548808 + 5825548809.

It is an arithmetic number, because the mean of its divisors is an integer number (5825548809).

Almost surely, 2^11651097617 is an apocalyptic number.

It is an amenable number.

11651097617 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651097617 is an equidigital number, since it uses as much as digits as its factorization.

11651097617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 44.

The spelling of 11651097617 in words is "eleven billion, six hundred fifty-one million, ninety-seven thousand, six hundred seventeen".