23128385278 has 16 divisors (see below), whose sum is σ = 36499249584. Its totient is φ = 10977215040.

The previous prime is 23128385251. The next prime is 23128385353. The reversal of 23128385278 is 87258382132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3808500 + ... + 3814567.

It is an arithmetic number, because the mean of its divisors is an integer number (2281203099).

Almost surely, 2^23128385278 is an apocalyptic number.

23128385278 is a deficient number, since it is larger than the sum of its proper divisors (13370864306).

23128385278 is a wasteful number, since it uses less digits than its factorization.

23128385278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623147.

The product of its digits is 1290240, while the sum is 49.

The spelling of 23128385278 in words is "twenty-three billion, one hundred twenty-eight million, three hundred eighty-five thousand, two hundred seventy-eight".