1822716059721 has 32 divisors (see below), whose sum is σ = 2462693321088. Its totient is φ = 1199041536000.

The previous prime is 1822716059707. The next prime is 1822716059729. The reversal of 1822716059721 is 1279506172281.

It is a happy number.

It is not a de Polignac number, because 1822716059721 - 2²⁵ = 1822682505289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1822716059729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 277131585 + ... + 277138161.

It is an arithmetic number, because the mean of its divisors is an integer number (76959166284).

Almost surely, 2^{1822716059721} is an apocalyptic number.

It is an amenable number.

1822716059721 is a deficient number, since it is larger than the sum of its proper divisors (639977261367).

1822716059721 is a wasteful number, since it uses less digits than its factorization.

1822716059721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10201.

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 1822716059721 in words is "one trillion, eight hundred twenty-two billion, seven hundred sixteen million, fifty-nine thousand, seven hundred twenty-one".