2154546454512 has 80 divisors (see below), whose sum is σ = 6096536180640. Its totient is φ = 652627992576.

The previous prime is 2154546454499. The next prime is 2154546454519.

2154546454512 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 (2154546454519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45500053 + ... + 45547380.

It is an arithmetic number, because the mean of its divisors is an integer number (76206702258).

Almost surely, 2^{2154546454512} is an apocalyptic number.

It is an amenable number.

2154546454512 is an abundant number, since it is smaller than the sum of its proper divisors (3941989726128).

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

2154546454512 is a wasteful number, since it uses less digits than its factorization.

2154546454512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91047490 (or 91047484 counting only the distinct ones).

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

The spelling of 2154546454512 in words is "two trillion, one hundred fifty-four billion, five hundred forty-six million, four hundred fifty-four thousand, five hundred twelve".