11398395478 has 16 divisors (see below), whose sum is σ = 17338116096. Its totient is φ = 5619297640.

The previous prime is 11398395457. The next prime is 11398395521. The reversal of 11398395478 is 87459389311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15243 + ... + 151753.

It is an arithmetic number, because the mean of its divisors is an integer number (1083632256).

Almost surely, 2^11398395478 is an apocalyptic number.

11398395478 is a deficient number, since it is larger than the sum of its proper divisors (5939720618).

11398395478 is a wasteful number, since it uses less digits than its factorization.

11398395478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137099.

The product of its digits is 6531840, while the sum is 58.

The spelling of 11398395478 in words is "eleven billion, three hundred ninety-eight million, three hundred ninety-five thousand, four hundred seventy-eight".