2154456544512 has 36 divisors (see below), whose sum is σ = 5733996326240. Its totient is φ = 718152181248.

The previous prime is 2154456544511. The next prime is 2154456544531.

2154456544512 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154456544511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1402640212 + ... + 1402641747.

Almost surely, 2^{2154456544512} is an apocalyptic number.

It is an amenable number.

2154456544512 is an abundant number, since it is smaller than the sum of its proper divisors (3579539781728).

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

2154456544512 is an equidigital number, since it uses as much as digits as its factorization.

2154456544512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805281978 (or 2805281964 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 48.

The spelling of 2154456544512 in words is "two trillion, one hundred fifty-four billion, four hundred fifty-six million, five hundred forty-four thousand, five hundred twelve".