11291072426 has 4 divisors (see below), whose sum is σ = 16936608642. Its totient is φ = 5645536212.

The previous prime is 11291072381. The next prime is 11291072437. The reversal of 11291072426 is 62427019211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62427019211 = 53 ⋅1177868287.

It can be written as a sum of positive squares in only one way, i.e., 10800405625 + 490666801 = 103925^2 + 22151^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822768105 + ... + 2822768108.

Almost surely, 2^11291072426 is an apocalyptic number.

11291072426 is a deficient number, since it is larger than the sum of its proper divisors (5645536216).

11291072426 is an equidigital number, since it uses as much as digits as its factorization.

11291072426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5645536215.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 11291072426 in words is "eleven billion, two hundred ninety-one million, seventy-two thousand, four hundred twenty-six".