11663722639 has 8 divisors (see below), whose sum is σ = 12055263488. Its totient is φ = 11276197920.

The previous prime is 11663722621. The next prime is 11663722649. The reversal of 11663722639 is 93622736611.

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 11663722639 - 2⁹ = 11663722127 is a prime.

It is a super-2 number, since 2×11663722639² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11663722619) 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, 998127 + ... + 1009744.

It is an arithmetic number, because the mean of its divisors is an integer number (1506907936).

Almost surely, 2^11663722639 is an apocalyptic number.

11663722639 is a deficient number, since it is larger than the sum of its proper divisors (391540849).

11663722639 is a wasteful number, since it uses less digits than its factorization.

11663722639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2008065.

The product of its digits is 489888, while the sum is 46.

The spelling of 11663722639 in words is "eleven billion, six hundred sixty-three million, seven hundred twenty-two thousand, six hundred thirty-nine".