2145661503144 has 16 divisors (see below), whose sum is σ = 5364153757920. Its totient is φ = 715220501040.

The previous prime is 2145661503131. The next prime is 2145661503157. The reversal of 2145661503144 is 4413051665412.

It is an interprime number because it is at equal distance from previous prime (2145661503131) and next prime (2145661503157).

It is a junction number, because it is equal to n+sod(n) for n = 2145661503096 and 2145661503105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44701281292 + ... + 44701281339.

It is an arithmetic number, because the mean of its divisors is an integer number (335259609870).

Almost surely, 2^{2145661503144} is an apocalyptic number.

2145661503144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2145661503144 is an abundant number, since it is smaller than the sum of its proper divisors (3218492254776).

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

2145661503144 is a wasteful number, since it uses less digits than its factorization.

2145661503144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89402562640 (or 89402562636 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 2145661503144 in words is "two trillion, one hundred forty-five billion, six hundred sixty-one million, five hundred three thousand, one hundred forty-four".