12154036352877 has 20 divisors (see below), whose sum is σ = 18156180950556. Its totient is φ = 8102623363200.

The previous prime is 12154036352869. The next prime is 12154036353007. The reversal of 12154036352877 is 77825363045121.

12154036352877 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 40 + 3 + 6 + 3 + 528 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9470815445961 + 2683220906916 = 3077469^2 + 1638054^2 .

It is not a de Polignac number, because 12154036352877 - 2³ = 12154036352869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154036352377) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10329627 + ... + 11445927.

Almost surely, 2^{12154036352877} is an apocalyptic number.

It is an amenable number.

12154036352877 is a deficient number, since it is larger than the sum of its proper divisors (6002144597679).

12154036352877 is a wasteful number, since it uses less digits than its factorization.

12154036352877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250730 (or 1250721 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

Adding to 12154036352877 its reverse (77825363045121), we get a palindrome (89979399397998).

The spelling of 12154036352877 in words is "twelve trillion, one hundred fifty-four billion, thirty-six million, three hundred fifty-two thousand, eight hundred seventy-seven".