2154405551204 has 12 divisors (see below), whose sum is σ = 3815633928624. Its totient is φ = 1064224428744.

The previous prime is 2154405551173. The next prime is 2154405551209. The reversal of 2154405551204 is 4021555044512.

It is a super-2 number, since 2×2154405551204² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154405551209) 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 3 ways as a sum of consecutive naturals, for example, 3244586342 + ... + 3244587005.

It is an arithmetic number, because the mean of its divisors is an integer number (317969494052).

Almost surely, 2^{2154405551204} is an apocalyptic number.

It is an amenable number.

2154405551204 is a deficient number, since it is larger than the sum of its proper divisors (1661228377420).

2154405551204 is a wasteful number, since it uses less digits than its factorization.

2154405551204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489173434 (or 6489173432 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 2154405551204 in words is "two trillion, one hundred fifty-four billion, four hundred five million, five hundred fifty-one thousand, two hundred four".