11616745477 has 4 divisors (see below), whose sum is σ = 11616961356. Its totient is φ = 11616529600.

The previous prime is 11616745471. The next prime is 11616745519. The reversal of 11616745477 is 77454761611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 77454761611 = 263 ⋅294504797.

It can be written as a sum of positive squares in 2 ways, for example, as 176517796 + 11440227681 = 13286^2 + 106959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11616745477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11616745477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11616745471) 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, 45213 + ... + 158989.

It is an arithmetic number, because the mean of its divisors is an integer number (2904240339).

Almost surely, 2^11616745477 is an apocalyptic number.

It is an amenable number.

11616745477 is a deficient number, since it is larger than the sum of its proper divisors (215879).

11616745477 is a wasteful number, since it uses less digits than its factorization.

11616745477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215878.

The product of its digits is 987840, while the sum is 49.

The spelling of 11616745477 in words is "eleven billion, six hundred sixteen million, seven hundred forty-five thousand, four hundred seventy-seven".