22781878293 has 8 divisors (see below), whose sum is σ = 30423979456. Its totient is φ = 15163848000.

The previous prime is 22781878271. The next prime is 22781878307. The reversal of 22781878293 is 39287818722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22781878293 - 2¹² = 22781874197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22781878793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6015508 + ... + 6019293.

It is an arithmetic number, because the mean of its divisors is an integer number (3802997432).

Almost surely, 2^22781878293 is an apocalyptic number.

It is an amenable number.

22781878293 is a deficient number, since it is larger than the sum of its proper divisors (7642101163).

22781878293 is a wasteful number, since it uses less digits than its factorization.

22781878293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035435.

The product of its digits is 5419008, while the sum is 57.

The spelling of 22781878293 in words is "twenty-two billion, seven hundred eighty-one million, eight hundred seventy-eight thousand, two hundred ninety-three".