12402054152545 has 8 divisors (see below), whose sum is σ = 14902124782824. Its totient is φ = 9908536788864.

The previous prime is 12402054152531. The next prime is 12402054152561. The reversal of 12402054152545 is 54525145020421.

It can be written as a sum of positive squares in 4 ways, for example, as 266801174784 + 12135252977761 = 516528^2 + 3483569^2 .

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 12402054152545 - 2³⁷ = 12264615199073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12402054152498 and 12402054152507.

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, 1638312484 + ... + 1638320053.

It is an arithmetic number, because the mean of its divisors is an integer number (1862765597853).

Almost surely, 2^{12402054152545} is an apocalyptic number.

It is an amenable number.

12402054152545 is a deficient number, since it is larger than the sum of its proper divisors (2500070630279).

12402054152545 is an equidigital number, since it uses as much as digits as its factorization.

12402054152545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276633299.

The product of its (nonzero) digits is 320000, while the sum is 40.

Adding to 12402054152545 its reverse (54525145020421), we get a palindrome (66927199172966).

The spelling of 12402054152545 in words is "twelve trillion, four hundred two billion, fifty-four million, one hundred fifty-two thousand, five hundred forty-five".