11620644331 has 4 divisors (see below), whose sum is σ = 11622828672. Its totient is φ = 11618459992.

The previous prime is 11620644257. The next prime is 11620644341. The reversal of 11620644331 is 13344602611.

It is a happy number.

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 11620644331 - 2⁹ = 11620643819 is a prime.

It is a super-2 number, since 2×11620644331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11620644293 and 11620644302.

It is not an unprimeable number, because it can be changed into a prime (11620644341) 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, 1084171 + ... + 1094836.

It is an arithmetic number, because the mean of its divisors is an integer number (2905707168).

Almost surely, 2^11620644331 is an apocalyptic number.

11620644331 is a deficient number, since it is larger than the sum of its proper divisors (2184341).

11620644331 is an equidigital number, since it uses as much as digits as its factorization.

11620644331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184340.

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 11620644331 in words is "eleven billion, six hundred twenty million, six hundred forty-four thousand, three hundred thirty-one".