1145091201279 has 4 divisors (see below), whose sum is σ = 1526788268376. Its totient is φ = 763394134184.

The previous prime is 1145091201253. The next prime is 1145091201349. The reversal of 1145091201279 is 9721021905411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145091201279 - 2⁹ = 1145091200767 is a prime.

It is a super-2 number, since 2×1145091201279² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145091201279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145091201479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190848533544 + ... + 190848533549.

It is an arithmetic number, because the mean of its divisors is an integer number (381697067094).

Almost surely, 2^{1145091201279} is an apocalyptic number.

1145091201279 is a deficient number, since it is larger than the sum of its proper divisors (381697067097).

1145091201279 is an equidigital number, since it uses as much as digits as its factorization.

1145091201279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381697067096.

The product of its (nonzero) digits is 45360, while the sum is 42.

The spelling of 1145091201279 in words is "one trillion, one hundred forty-five billion, ninety-one million, two hundred one thousand, two hundred seventy-nine".