11621174655 has 8 divisors (see below), whose sum is σ = 18593879472. Its totient is φ = 6197959808.

The previous prime is 11621174581. The next prime is 11621174657. The reversal of 11621174655 is 55647112611.

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 11621174655 - 2¹² = 11621170559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621174657) 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, 387372474 + ... + 387372503.

It is an arithmetic number, because the mean of its divisors is an integer number (2324234934).

Almost surely, 2^11621174655 is an apocalyptic number.

11621174655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11621174655 is a deficient number, since it is larger than the sum of its proper divisors (6972704817).

11621174655 is an equidigital number, since it uses as much as digits as its factorization.

11621174655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774744985.

The product of its digits is 50400, while the sum is 39.

The spelling of 11621174655 in words is "eleven billion, six hundred twenty-one million, one hundred seventy-four thousand, six hundred fifty-five".