11398023878 has 16 divisors (see below), whose sum is σ = 17279598336. Its totient is φ = 5638264200.

The previous prime is 11398023839. The next prime is 11398023883. The reversal of 11398023878 is 87832089311.

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, 192953 + ... + 245003.

It is an arithmetic number, because the mean of its divisors is an integer number (1079974896).

Almost surely, 2^11398023878 is an apocalyptic number.

11398023878 is a deficient number, since it is larger than the sum of its proper divisors (5881574458).

11398023878 is a wasteful number, since it uses less digits than its factorization.

11398023878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53219.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 11398023878 in words is "eleven billion, three hundred ninety-eight million, twenty-three thousand, eight hundred seventy-eight".