11619977616 has 135 divisors (see below), whose sum is σ = 35264780577. Its totient is φ = 3570203520.

The previous prime is 11619977609. The next prime is 11619977617. The reversal of 11619977616 is 61677991611.

The square root of 11619977616 is 107796.

It is a perfect power (a square), and thus also a powerful number.

11619977616 is a `hidden beast` number, since 1 + 1 + 6 + 19 + 9 + 7 + 7 + 616 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1718931600 + 9901046016 = 41460^2 + 99504^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (11619977617) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16815831 + ... + 16816521.

Almost surely, 2^11619977616 is an apocalyptic number.

11619977616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11619977616 is the 107796-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11619977616

11619977616 is an abundant number, since it is smaller than the sum of its proper divisors (23644802961).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11619977616 is an equidigital number, since it uses as much as digits as its factorization.

11619977616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1422 (or 709 counting only the distinct ones).

The product of its digits is 857304, while the sum is 54.

The spelling of 11619977616 in words is "eleven billion, six hundred nineteen million, nine hundred seventy-seven thousand, six hundred sixteen".