13386978297494 has 8 divisors (see below), whose sum is σ = 20100368804520. Its totient is φ = 6686855362656.

The previous prime is 13386978297463. The next prime is 13386978297551. The reversal of 13386978297494 is 49479287968331.

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

It is a super-2 number, since 2×13386978297494² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3316890524 + ... + 3316894559.

It is an arithmetic number, because the mean of its divisors is an integer number (2512546100565).

Almost surely, 2^{13386978297494} is an apocalyptic number.

13386978297494 is a deficient number, since it is larger than the sum of its proper divisors (6713390507026).

13386978297494 is a wasteful number, since it uses less digits than its factorization.

13386978297494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633786094.

The product of its digits is 3950456832, while the sum is 80.

The spelling of 13386978297494 in words is "thirteen trillion, three hundred eighty-six billion, nine hundred seventy-eight million, two hundred ninety-seven thousand, four hundred ninety-four".