11621077745 has 8 divisors (see below), whose sum is σ = 14047084584. Its totient is φ = 9229001344.

The previous prime is 11621077739. The next prime is 11621077747. The reversal of 11621077745 is 54777012611.

It can be written as a sum of positive squares in 4 ways, for example, as 1862008801 + 9759068944 = 43151^2 + 98788^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11621077745 - 2⁴ = 11621077729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11621077747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8481854 + ... + 8483223.

It is an arithmetic number, because the mean of its divisors is an integer number (1755885573).

Almost surely, 2^11621077745 is an apocalyptic number.

It is an amenable number.

11621077745 is a deficient number, since it is larger than the sum of its proper divisors (2426006839).

11621077745 is a wasteful number, since it uses less digits than its factorization.

11621077745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16965219.

The product of its (nonzero) digits is 82320, while the sum is 41.

The spelling of 11621077745 in words is "eleven billion, six hundred twenty-one million, seventy-seven thousand, seven hundred forty-five".