11398638495 has 8 divisors (see below), whose sum is σ = 18237821616. Its totient is φ = 6079273856.

The previous prime is 11398638487. The next prime is 11398638497. The reversal of 11398638495 is 59483689311.

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

It is a cyclic number.

It is not a de Polignac number, because 11398638495 - 2³ = 11398638487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11398638497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379954602 + ... + 379954631.

It is an arithmetic number, because the mean of its divisors is an integer number (2279727702).

Almost surely, 2^11398638495 is an apocalyptic number.

11398638495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11398638495 is a deficient number, since it is larger than the sum of its proper divisors (6839183121).

11398638495 is an equidigital number, since it uses as much as digits as its factorization.

11398638495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759909241.

The product of its digits is 5598720, while the sum is 57.

The spelling of 11398638495 in words is "eleven billion, three hundred ninety-eight million, six hundred thirty-eight thousand, four hundred ninety-five".