13378780690 has 32 divisors (see below), whose sum is σ = 26289095616. Its totient is φ = 4861671360.

The previous prime is 13378780661. The next prime is 13378780699. The reversal of 13378780690 is 9608787331.

It is a happy number.

It is a super-2 number, since 2×13378780690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13378780699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122124 + ... + 204136.

It is an arithmetic number, because the mean of its divisors is an integer number (821534238).

Almost surely, 2^13378780690 is an apocalyptic number.

13378780690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13378780690 is a deficient number, since it is larger than the sum of its proper divisors (12910314926).

13378780690 is a wasteful number, since it uses less digits than its factorization.

13378780690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83514.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 13378780690 in words is "thirteen billion, three hundred seventy-eight million, seven hundred eighty thousand, six hundred ninety".