11627517977 has 4 divisors (see below), whose sum is σ = 11631534516. Its totient is φ = 11623501440.

The previous prime is 11627517947. The next prime is 11627518031. The reversal of 11627517977 is 77971572611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77971572611 = 1151 ⋅67742461.

It can be written as a sum of positive squares in 2 ways, for example, as 3115425856 + 8512092121 = 55816^2 + 92261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11627517977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11627517907) 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, 2003924 + ... + 2009717.

It is an arithmetic number, because the mean of its divisors is an integer number (2907883629).

Almost surely, 2^11627517977 is an apocalyptic number.

It is an amenable number.

11627517977 is a deficient number, since it is larger than the sum of its proper divisors (4016539).

11627517977 is an equidigital number, since it uses as much as digits as its factorization.

11627517977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4016538.

The product of its digits is 1296540, while the sum is 53.

The spelling of 11627517977 in words is "eleven billion, six hundred twenty-seven million, five hundred seventeen thousand, nine hundred seventy-seven".