11649777394 has 4 divisors (see below), whose sum is σ = 17474666094. Its totient is φ = 5824888696.

The previous prime is 11649777383. The next prime is 11649777397. The reversal of 11649777394 is 49377794611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10462630369 + 1187147025 = 102287^2 + 34455^2 .

It is not an unprimeable number, because it can be changed into a prime (11649777397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2912444347 + ... + 2912444350.

Almost surely, 2^11649777394 is an apocalyptic number.

11649777394 is a deficient number, since it is larger than the sum of its proper divisors (5824888700).

11649777394 is an equidigital number, since it uses as much as digits as its factorization.

11649777394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5824888699.

The product of its digits is 8001504, while the sum is 58.

The spelling of 11649777394 in words is "eleven billion, six hundred forty-nine million, seven hundred seventy-seven thousand, three hundred ninety-four".