12155632406454 has 32 divisors (see below), whose sum is σ = 24723589248000. Its totient is φ = 3983158224864.

The previous prime is 12155632406453. The next prime is 12155632406459. The reversal of 12155632406454 is 45460423655121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155632406453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57493467 + ... + 57704505.

It is an arithmetic number, because the mean of its divisors is an integer number (772612164000).

Almost surely, 2^{12155632406454} is an apocalyptic number.

12155632406454 is an abundant number, since it is smaller than the sum of its proper divisors (12567956841546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12155632406454 is a wasteful number, since it uses less digits than its factorization.

12155632406454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373812.

The product of its (nonzero) digits is 3456000, while the sum is 48.

The spelling of 12155632406454 in words is "twelve trillion, one hundred fifty-five billion, six hundred thirty-two million, four hundred six thousand, four hundred fifty-four".