2021236537145 has 16 divisors (see below), whose sum is σ = 2780356119168. Its totient is φ = 1381803477120.

The previous prime is 2021236537141. The next prime is 2021236537153. The reversal of 2021236537145 is 5417356321202.

It is not a de Polignac number, because 2021236537145 - 2² = 2021236537141 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021236537141) 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, 87223484 + ... + 87246653.

It is an arithmetic number, because the mean of its divisors is an integer number (173772257448).

Almost surely, 2^{2021236537145} is an apocalyptic number.

It is an amenable number.

2021236537145 is a deficient number, since it is larger than the sum of its proper divisors (759119582023).

2021236537145 is a wasteful number, since it uses less digits than its factorization.

2021236537145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174470480.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 2021236537145 in words is "two trillion, twenty-one billion, two hundred thirty-six million, five hundred thirty-seven thousand, one hundred forty-five".