2145533015444 has 48 divisors (see below), whose sum is σ = 4639129356288. Its totient is φ = 845479600128.

The previous prime is 2145533015387. The next prime is 2145533015447. The reversal of 2145533015444 is 4445103355412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145533015447) 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, 11374004 + ... + 11561099.

It is an arithmetic number, because the mean of its divisors is an integer number (96648528256).

Almost surely, 2^{2145533015444} is an apocalyptic number.

It is an amenable number.

2145533015444 is an abundant number, since it is smaller than the sum of its proper divisors (2493596340844).

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

2145533015444 is a wasteful number, since it uses less digits than its factorization.

2145533015444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22935384 (or 22935382 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 2145533015444 in words is "two trillion, one hundred forty-five billion, five hundred thirty-three million, fifteen thousand, four hundred forty-four".