11577865493 has 2 divisors, whose sum is σ = 11577865494. Its totient is φ = 11577865492.

The previous prime is 11577865477. The next prime is 11577865499. The reversal of 11577865493 is 39456877511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11015132209 + 562733284 = 104953^2 + 23722^2 .

It is a cyclic number.

It is not a de Polignac number, because 11577865493 - 2⁴ = 11577865477 is a prime.

It is a super-3 number, since 3×11577865493³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11577865499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5788932746 + 5788932747.

It is an arithmetic number, because the mean of its divisors is an integer number (5788932747).

Almost surely, 2^11577865493 is an apocalyptic number.

It is an amenable number.

11577865493 is a deficient number, since it is larger than the sum of its proper divisors (1).

11577865493 is an equidigital number, since it uses as much as digits as its factorization.

11577865493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 56.

The spelling of 11577865493 in words is "eleven billion, five hundred seventy-seven million, eight hundred sixty-five thousand, four hundred ninety-three".