721252146443 has 2 divisors, whose sum is σ = 721252146444. Its totient is φ = 721252146442.

The previous prime is 721252146427. The next prime is 721252146523. The reversal of 721252146443 is 344641252127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 721252146443 - 2⁴ = 721252146427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 721252146443.

It is not a weakly prime, because it can be changed into another prime (721252146413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360626073221 + 360626073222.

It is an arithmetic number, because the mean of its divisors is an integer number (360626073222).

Almost surely, 2^721252146443 is an apocalyptic number.

721252146443 is a deficient number, since it is larger than the sum of its proper divisors (1).

721252146443 is an equidigital number, since it uses as much as digits as its factorization.

721252146443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 41.

The spelling of 721252146443 in words is "seven hundred twenty-one billion, two hundred fifty-two million, one hundred forty-six thousand, four hundred forty-three".