5621780823769 has 16 divisors (see below), whose sum is σ = 6455718175680. Its totient is φ = 4841661591360.

The previous prime is 5621780823683. The next prime is 5621780823809. The reversal of 5621780823769 is 9673280871265.

It is not a de Polignac number, because 5621780823769 - 2²¹ = 5621778726617 is a prime.

It is a super-2 number, since 2×5621780823769² (a number of 26 digits) contains 22 as substring.

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 5621780823769.

It is not an unprimeable number, because it can be changed into a prime (5621780826769) 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, 23156199 + ... + 23397715.

It is an arithmetic number, because the mean of its divisors is an integer number (403482385980).

Almost surely, 2^{5621780823769} is an apocalyptic number.

It is an amenable number.

5621780823769 is a deficient number, since it is larger than the sum of its proper divisors (833937351911).

5621780823769 is a wasteful number, since it uses less digits than its factorization.

5621780823769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352920.

The product of its (nonzero) digits is 60963840, while the sum is 64.

The spelling of 5621780823769 in words is "five trillion, six hundred twenty-one billion, seven hundred eighty million, eight hundred twenty-three thousand, seven hundred sixty-nine".