23006709978 has 32 divisors (see below), whose sum is σ = 52921728384. Its totient is φ = 6531475392.

The previous prime is 23006709917. The next prime is 23006710031. The reversal of 23006709978 is 87990760032.

It is a self number, because there is not a number n which added to its sum of digits gives 23006709978.

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, 1737925 + ... + 1751112.

It is an arithmetic number, because the mean of its divisors is an integer number (1653804012).

Almost surely, 2^23006709978 is an apocalyptic number.

23006709978 is an abundant number, since it is smaller than the sum of its proper divisors (29915018406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23006709978 is a wasteful number, since it uses less digits than its factorization.

23006709978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489206.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 23006709978 in words is "twenty-three billion, six million, seven hundred nine thousand, nine hundred seventy-eight".