10990601858 has 4 divisors (see below), whose sum is σ = 16485902790. Its totient is φ = 5495300928.

The previous prime is 10990601821. The next prime is 10990601879. The reversal of 10990601858 is 85810609901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85810609901 = 37 ⋅2319205673.

It can be written as a sum of positive squares in only one way, i.e., 10957274329 + 33327529 = 104677^2 + 5773^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2747650463 + ... + 2747650466.

Almost surely, 2^10990601858 is an apocalyptic number.

10990601858 is a deficient number, since it is larger than the sum of its proper divisors (5495300932).

10990601858 is an equidigital number, since it uses as much as digits as its factorization.

10990601858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5495300931.

The product of its (nonzero) digits is 155520, while the sum is 47.

The spelling of 10990601858 in words is "ten billion, nine hundred ninety million, six hundred one thousand, eight hundred fifty-eight".