23898878478 has 12 divisors (see below), whose sum is σ = 51780903408. Its totient is φ = 7966292820.

The previous prime is 23898878461. The next prime is 23898878489. The reversal of 23898878478 is 87487889832.

23898878478 is a `hidden beast` number, since 2 + 3 + 8 + 9 + 88 + 78 + 478 = 666.

23898878478 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 663857718 + ... + 663857753.

It is an arithmetic number, because the mean of its divisors is an integer number (4315075284).

Almost surely, 2^23898878478 is an apocalyptic number.

23898878478 is an abundant number, since it is smaller than the sum of its proper divisors (27882024930).

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

23898878478 is a wasteful number, since it uses less digits than its factorization.

23898878478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327715479 (or 1327715476 counting only the distinct ones).

The product of its digits is 346816512, while the sum is 72.

The spelling of 23898878478 in words is "twenty-three billion, eight hundred ninety-eight million, eight hundred seventy-eight thousand, four hundred seventy-eight".