10902991191 has 32 divisors (see below), whose sum is σ = 15611097600. Its totient is φ = 6744376320.

The previous prime is 10902991189. The next prime is 10902991207. The reversal of 10902991191 is 19119920901.

It is not a de Polignac number, because 10902991191 - 2¹ = 10902991189 is a prime.

It is a super-2 number, since 2×10902991191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10902991171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1626156 + ... + 1632846.

It is an arithmetic number, because the mean of its divisors is an integer number (487846800).

Almost surely, 2^10902991191 is an apocalyptic number.

10902991191 is a deficient number, since it is larger than the sum of its proper divisors (4708106409).

10902991191 is a wasteful number, since it uses less digits than its factorization.

10902991191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7159.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 10902991191 in words is "ten billion, nine hundred two million, nine hundred ninety-one thousand, one hundred ninety-one".