23198239778 has 8 divisors (see below), whose sum is σ = 39768411072. Its totient is φ = 9942102756.

The previous prime is 23198239751. The next prime is 23198239819. The reversal of 23198239778 is 87793289132.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828508550 + ... + 828508577.

It is an arithmetic number, because the mean of its divisors is an integer number (4971051384).

Almost surely, 2^23198239778 is an apocalyptic number.

23198239778 is a deficient number, since it is larger than the sum of its proper divisors (16570171294).

23198239778 is a wasteful number, since it uses less digits than its factorization.

23198239778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657017136.

The product of its digits is 9144576, while the sum is 59.

The spelling of 23198239778 in words is "twenty-three billion, one hundred ninety-eight million, two hundred thirty-nine thousand, seven hundred seventy-eight".