11621755607 has 16 divisors (see below), whose sum is σ = 14609220864. Its totient is φ = 9055906200.

The previous prime is 11621755601. The next prime is 11621755643. The reversal of 11621755607 is 70655712611.

It is not a de Polignac number, because 11621755607 - 2⁸ = 11621755351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11621755601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614369 + ... + 633002.

It is an arithmetic number, because the mean of its divisors is an integer number (913076304).

Almost surely, 2^11621755607 is an apocalyptic number.

11621755607 is a deficient number, since it is larger than the sum of its proper divisors (2987465257).

11621755607 is an equidigital number, since it uses as much as digits as its factorization.

11621755607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247411 (or 1247389 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 41.

The spelling of 11621755607 in words is "eleven billion, six hundred twenty-one million, seven hundred fifty-five thousand, six hundred seven".