10990559657 has 16 divisors (see below), whose sum is σ = 13771392000. Its totient is φ = 8521025040.

The previous prime is 10990559641. The next prime is 10990559659. The reversal of 10990559657 is 75695509901.

It is a happy number.

It is not a de Polignac number, because 10990559657 - 2⁴ = 10990559641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10990559659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343307 + ... + 373952.

It is an arithmetic number, because the mean of its divisors is an integer number (860712000).

Almost surely, 2^10990559657 is an apocalyptic number.

It is an amenable number.

10990559657 is a deficient number, since it is larger than the sum of its proper divisors (2780832343).

10990559657 is a wasteful number, since it uses less digits than its factorization.

10990559657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717476.

The product of its (nonzero) digits is 3827250, while the sum is 56.

The spelling of 10990559657 in words is "ten billion, nine hundred ninety million, five hundred fifty-nine thousand, six hundred fifty-seven".