11798327577 has 4 divisors (see below), whose sum is σ = 15731103440. Its totient is φ = 7865551716.

The previous prime is 11798327561. The next prime is 11798327617. The reversal of 11798327577 is 77572389711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77572389711 = 3 ⋅25857463237.

It is not a de Polignac number, because 11798327577 - 2⁴ = 11798327561 is a prime.

It is a super-2 number, since 2×11798327577² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11798327477) 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, 1966387927 + ... + 1966387932.

It is an arithmetic number, because the mean of its divisors is an integer number (3932775860).

Almost surely, 2^11798327577 is an apocalyptic number.

It is an amenable number.

11798327577 is a deficient number, since it is larger than the sum of its proper divisors (3932775863).

11798327577 is an equidigital number, since it uses as much as digits as its factorization.

11798327577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932775862.

The product of its digits is 5186160, while the sum is 57.

The spelling of 11798327577 in words is "eleven billion, seven hundred ninety-eight million, three hundred twenty-seven thousand, five hundred seventy-seven".