22478895478 has 32 divisors (see below), whose sum is σ = 38683814400. Its totient is φ = 9710391456.

The previous prime is 22478895457. The next prime is 22478895487. The reversal of 22478895478 is 87459887422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233118 + ... + 315121.

It is an arithmetic number, because the mean of its divisors is an integer number (1208869200).

Almost surely, 2^22478895478 is an apocalyptic number.

22478895478 is a deficient number, since it is larger than the sum of its proper divisors (16204918922).

22478895478 is a wasteful number, since it uses less digits than its factorization.

22478895478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548356.

The product of its digits is 72253440, while the sum is 64.

The spelling of 22478895478 in words is "twenty-two billion, four hundred seventy-eight million, eight hundred ninety-five thousand, four hundred seventy-eight".