11601008639 has 4 divisors (see below), whose sum is σ = 12655645800. Its totient is φ = 10546371480.

The previous prime is 11601008633. The next prime is 11601008677. The reversal of 11601008639 is 93680010611.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11601008639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11601008599 and 11601008608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601008633) 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, 527318564 + ... + 527318585.

It is an arithmetic number, because the mean of its divisors is an integer number (3163911450).

Almost surely, 2^11601008639 is an apocalyptic number.

11601008639 is a deficient number, since it is larger than the sum of its proper divisors (1054637161).

11601008639 is a wasteful number, since it uses less digits than its factorization.

11601008639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054637160.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 11601008639 in words is "eleven billion, six hundred one million, eight thousand, six hundred thirty-nine".