22778860405 has 64 divisors (see below), whose sum is σ = 35706147840. Its totient is φ = 13576679424.

The previous prime is 22778860393. The next prime is 22778860411. The reversal of 22778860405 is 50406887722.

It is not a de Polignac number, because 22778860405 - 2¹⁹ = 22778336117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 368167 + ... + 425563.

It is an arithmetic number, because the mean of its divisors is an integer number (557908560).

Almost surely, 2^22778860405 is an apocalyptic number.

It is an amenable number.

22778860405 is a deficient number, since it is larger than the sum of its proper divisors (12927287435).

22778860405 is a wasteful number, since it uses less digits than its factorization.

22778860405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57478.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The spelling of 22778860405 in words is "twenty-two billion, seven hundred seventy-eight million, eight hundred sixty thousand, four hundred five".