11642639290 has 16 divisors (see below), whose sum is σ = 20975770368. Its totient is φ = 4652829136.

The previous prime is 11642639287. The next prime is 11642639311. The reversal of 11642639290 is 9293624611.

11642639290 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516742 + ... + 538801.

It is an arithmetic number, because the mean of its divisors is an integer number (1310985648).

Almost surely, 2^11642639290 is an apocalyptic number.

11642639290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11642639290 is a deficient number, since it is larger than the sum of its proper divisors (9333131078).

11642639290 is a wasteful number, since it uses less digits than its factorization.

11642639290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056653.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 11642639290 in words is "eleven billion, six hundred forty-two million, six hundred thirty-nine thousand, two hundred ninety".