2145351564500 has 48 divisors (see below), whose sum is σ = 4721214738240. Its totient is φ = 851589908000.

The previous prime is 2145351564481. The next prime is 2145351564523. The reversal of 2145351564500 is 54651535412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16311230 + ... + 16442229.

It is an arithmetic number, because the mean of its divisors is an integer number (98358640380).

Almost surely, 2^{2145351564500} is an apocalyptic number.

2145351564500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145351564500 is an abundant number, since it is smaller than the sum of its proper divisors (2575863173740).

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

2145351564500 is a wasteful number, since it uses less digits than its factorization.

2145351564500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32753609 (or 32753597 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 2145351564500 in words is "two trillion, one hundred forty-five billion, three hundred fifty-one million, five hundred sixty-four thousand, five hundred".