245323354142021 has 16 divisors (see below), whose sum is σ = 258793925688000. Its totient is φ = 231908882025600.

The previous prime is 245323354141997. The next prime is 245323354142047. The reversal of 245323354142021 is 120241453323542.

It is a cyclic number.

It is not a de Polignac number, because 245323354142021 - 2²² = 245323349947717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245323354142021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245323354142081) 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, 37552991 + ... + 43599011.

It is an arithmetic number, because the mean of its divisors is an integer number (16174620355500).

Almost surely, 2^{245323354142021} is an apocalyptic number.

It is an amenable number.

245323354142021 is a deficient number, since it is larger than the sum of its proper divisors (13470571545979).

245323354142021 is a wasteful number, since it uses less digits than its factorization.

245323354142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6050660.

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 245323354142021 in words is "two hundred forty-five trillion, three hundred twenty-three billion, three hundred fifty-four million, one hundred forty-two thousand, twenty-one".