2145516155412 has 72 divisors (see below), whose sum is σ = 5881202863200. Its totient is φ = 606935246400.

The previous prime is 2145516155401. The next prime is 2145516155437.

2145516155412 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18004162 + ... + 18122937.

It is an arithmetic number, because the mean of its divisors is an integer number (81683373100).

Almost surely, 2^{2145516155412} is an apocalyptic number.

It is an amenable number.

2145516155412 is an abundant number, since it is smaller than the sum of its proper divisors (3735686707788).

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

2145516155412 is a wasteful number, since it uses less digits than its factorization.

2145516155412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36127221 (or 36127212 counting only the distinct ones).

The product of its digits is 240000, while the sum is 42.

The spelling of 2145516155412 in words is "two trillion, one hundred forty-five billion, five hundred sixteen million, one hundred fifty-five thousand, four hundred twelve".