2021450625345 has 16 divisors (see below), whose sum is σ = 3321735082560. Its totient is φ = 1048968972864.

The previous prime is 2021450625307. The next prime is 2021450625347. The reversal of 2021450625345 is 5435260541202.

It is not a de Polignac number, because 2021450625345 - 2¹⁰ = 2021450624321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021450625347) 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, 1821126135 + ... + 1821127244.

It is an arithmetic number, because the mean of its divisors is an integer number (207608442660).

Almost surely, 2^{2021450625345} is an apocalyptic number.

It is an amenable number.

2021450625345 is a deficient number, since it is larger than the sum of its proper divisors (1300284457215).

2021450625345 is a wasteful number, since it uses less digits than its factorization.

2021450625345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642253424.

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 2021450625345 in words is "two trillion, twenty-one billion, four hundred fifty million, six hundred twenty-five thousand, three hundred forty-five".