11955145645 has 8 divisors (see below), whose sum is σ = 14346779256. Its totient is φ = 9563713536.

The previous prime is 11955145627. The next prime is 11955145651. The reversal of 11955145645 is 54654155911.

It can be written as a sum of positive squares in 4 ways, for example, as 3390383529 + 8564762116 = 58227^2 + 92546^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11955145645 - 2⁵ = 11955145613 is a prime.

It is a super-3 number, since 3×11955145645³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11955145595 and 11955145604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160129 + ... + 222601.

It is an arithmetic number, because the mean of its divisors is an integer number (1793347407).

Almost surely, 2^11955145645 is an apocalyptic number.

It is an amenable number.

11955145645 is a deficient number, since it is larger than the sum of its proper divisors (2391633611).

11955145645 is an equidigital number, since it uses as much as digits as its factorization.

11955145645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100751.

The product of its digits is 540000, while the sum is 46.

The spelling of 11955145645 in words is "eleven billion, nine hundred fifty-five million, one hundred forty-five thousand, six hundred forty-five".