11172312640001 has 4 divisors (see below), whose sum is σ = 11172319520004. Its totient is φ = 11172305760000.

The previous prime is 11172312639979. The next prime is 11172312640051. The reversal of 11172312640001 is 10004621327111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6400495206400 + 4771817433601 = 2529920^2 + 2184449^2 .

It is a cyclic number.

It is not a de Polignac number, because 11172312640001 - 2⁶ = 11172312639937 is a prime.

It is a super-2 number, since 2×11172312640001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11172312640051) 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, 500201 + ... + 4753401.

It is an arithmetic number, because the mean of its divisors is an integer number (2793079880001).

Almost surely, 2^{11172312640001} is an apocalyptic number.

It is an amenable number.

11172312640001 is a deficient number, since it is larger than the sum of its proper divisors (6880003).

11172312640001 is an equidigital number, since it uses as much as digits as its factorization.

11172312640001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880002.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 11172312640001 its reverse (10004621327111), we get a palindrome (21176933967112).

The spelling of 11172312640001 in words is "eleven trillion, one hundred seventy-two billion, three hundred twelve million, six hundred forty thousand, one".