2145540455412 has 48 divisors (see below), whose sum is σ = 5156298067200. Its totient is φ = 693857066112.

The previous prime is 2145540455327. The next prime is 2145540455417.

2145540455412 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145540455417) 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, 6768108 + ... + 7078019.

It is an arithmetic number, because the mean of its divisors is an integer number (107422876400).

Almost surely, 2^{2145540455412} is an apocalyptic number.

It is an amenable number.

2145540455412 is an abundant number, since it is smaller than the sum of its proper divisors (3010757611788).

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

2145540455412 is a wasteful number, since it uses less digits than its factorization.

2145540455412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13846520 (or 13846518 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 42.

The spelling of 2145540455412 in words is "two trillion, one hundred forty-five billion, five hundred forty million, four hundred fifty-five thousand, four hundred twelve".