11621734611 has 4 divisors (see below), whose sum is σ = 15495646152. Its totient is φ = 7747823072.

The previous prime is 11621734577. The next prime is 11621734637. The reversal of 11621734611 is 11643712611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11621734611 - 2⁹ = 11621734099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11621734211) 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, 1936955766 + ... + 1936955771.

It is an arithmetic number, because the mean of its divisors is an integer number (3873911538).

Almost surely, 2^11621734611 is an apocalyptic number.

11621734611 is a deficient number, since it is larger than the sum of its proper divisors (3873911541).

11621734611 is an equidigital number, since it uses as much as digits as its factorization.

11621734611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873911540.

The product of its digits is 6048, while the sum is 33.

The spelling of 11621734611 in words is "eleven billion, six hundred twenty-one million, seven hundred thirty-four thousand, six hundred eleven".