11420857398 has 8 divisors (see below), whose sum is σ = 22841714808. Its totient is φ = 3806952464.

The previous prime is 11420857351. The next prime is 11420857423. The reversal of 11420857398 is 89375802411.

11420857398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

11420857398 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 951738111 + ... + 951738122.

It is an arithmetic number, because the mean of its divisors is an integer number (2855214351).

Almost surely, 2^11420857398 is an apocalyptic number.

11420857398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11420857398 is a wasteful number, since it uses less digits than its factorization.

11420857398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903476238.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 11420857398 in words is "eleven billion, four hundred twenty million, eight hundred fifty-seven thousand, three hundred ninety-eight".