13251991218490 has 32 divisors (see below), whose sum is σ = 24108326673984. Its totient is φ = 5244227089920.

The previous prime is 13251991218467. The next prime is 13251991218491. The reversal of 13251991218490 is 9481219915231.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (13251991218491) 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, 147817 + ... + 5150323.

It is an arithmetic number, because the mean of its divisors is an integer number (753385208562).

Almost surely, 2^{13251991218490} is an apocalyptic number.

13251991218490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13251991218490 is a deficient number, since it is larger than the sum of its proper divisors (10856335455494).

13251991218490 is a wasteful number, since it uses less digits than its factorization.

13251991218490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005342.

The product of its (nonzero) digits is 1399680, while the sum is 55.

The spelling of 13251991218490 in words is "thirteen trillion, two hundred fifty-one billion, nine hundred ninety-one million, two hundred eighteen thousand, four hundred ninety".