13163921780790 has 96 divisors (see below), whose sum is σ = 35846857847808. Its totient is φ = 3088310068800.

The previous prime is 13163921780767. The next prime is 13163921780791. The reversal of 13163921780790 is 9708712936131.

It is a self number, because there is not a number n which added to its sum of digits gives 13163921780790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163921780791) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58378192 + ... + 58603251.

It is an arithmetic number, because the mean of its divisors is an integer number (373404769248).

Almost surely, 2^{13163921780790} is an apocalyptic number.

13163921780790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13163921780790 is an abundant number, since it is smaller than the sum of its proper divisors (22682936067018).

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

13163921780790 is a wasteful number, since it uses less digits than its factorization.

13163921780790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116981506 (or 116981495 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 13163921780790 in words is "thirteen trillion, one hundred sixty-three billion, nine hundred twenty-one million, seven hundred eighty thousand, seven hundred ninety".