2145205143500 has 24 divisors (see below), whose sum is σ = 4685128034496. Its totient is φ = 858082057200.

The previous prime is 2145205143461. The next prime is 2145205143533. The reversal of 2145205143500 is 53415025412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145204644 + ... + 2145205643.

It is an arithmetic number, because the mean of its divisors is an integer number (195213668104).

Almost surely, 2^{2145205143500} is an apocalyptic number.

2145205143500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145205143500 is an abundant number, since it is smaller than the sum of its proper divisors (2539922890996).

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

2145205143500 is a wasteful number, since it uses less digits than its factorization.

2145205143500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290410306 (or 4290410294 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 2145205143500 in words is "two trillion, one hundred forty-five billion, two hundred five million, one hundred forty-three thousand, five hundred".