11172120693623 has 4 divisors (see below), whose sum is σ = 11409825389280. Its totient is φ = 10934415997968.

The previous prime is 11172120693619. The next prime is 11172120693653. The reversal of 11172120693623 is 32639602127111.

It is a happy number.

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 11172120693623 - 2² = 11172120693619 is a prime.

It is a super-2 number, since 2×11172120693623² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172120693653) 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, 118852347758 + ... + 118852347851.

It is an arithmetic number, because the mean of its divisors is an integer number (2852456347320).

Almost surely, 2^{11172120693623} is an apocalyptic number.

11172120693623 is a deficient number, since it is larger than the sum of its proper divisors (237704695657).

11172120693623 is an equidigital number, since it uses as much as digits as its factorization.

11172120693623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237704695656.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 11172120693623 in words is "eleven trillion, one hundred seventy-two billion, one hundred twenty million, six hundred ninety-three thousand, six hundred twenty-three".