11642297445 has 24 divisors (see below), whose sum is σ = 20388030936. Its totient is φ = 6145210368.

The previous prime is 11642297437. The next prime is 11642297489. The reversal of 11642297445 is 54479224611.

11642297445 is a `hidden beast` number, since 116 + 4 + 2 + 2 + 97 + 445 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 983386881 + 10658910564 = 31359^2 + 103242^2 .

It is not a de Polignac number, because 11642297445 - 2³ = 11642297437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11642297445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1329232 + ... + 1337961.

It is an arithmetic number, because the mean of its divisors is an integer number (849501289).

Almost surely, 2^11642297445 is an apocalyptic number.

11642297445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11642297445 is a deficient number, since it is larger than the sum of its proper divisors (8745733491).

11642297445 is a wasteful number, since it uses less digits than its factorization.

11642297445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667301 (or 2667298 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 11642297445 in words is "eleven billion, six hundred forty-two million, two hundred ninety-seven thousand, four hundred forty-five".