11172425217541 has 12 divisors (see below), whose sum is σ = 12996795366828. Its totient is φ = 9576142884672.

The previous prime is 11172425217533. The next prime is 11172425217563. The reversal of 11172425217541 is 14571252427111.

It can be written as a sum of positive squares in 2 ways, for example, as 1257773465025 + 9914651752516 = 1121505^2 + 3148754^2 .

It is not a de Polignac number, because 11172425217541 - 2³ = 11172425217533 is a prime.

It is a super-2 number, since 2×11172425217541² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11172425247541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480886 + ... + 4751431.

It is an arithmetic number, because the mean of its divisors is an integer number (1083066280569).

Almost surely, 2^{11172425217541} is an apocalyptic number.

It is an amenable number.

11172425217541 is a deficient number, since it is larger than the sum of its proper divisors (1824370149287).

11172425217541 is an equidigital number, since it uses as much as digits as its factorization.

11172425217541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275908 (or 5275901 counting only the distinct ones).

The product of its digits is 156800, while the sum is 43.

The spelling of 11172425217541 in words is "eleven trillion, one hundred seventy-two billion, four hundred twenty-five million, two hundred seventeen thousand, five hundred forty-one".