12790854191998 has 4 divisors (see below), whose sum is σ = 19186281288000. Its totient is φ = 6395427095998.

The previous prime is 12790854191993. The next prime is 12790854192001. The reversal of 12790854191998 is 89919145809721.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12790854191998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12790854191993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197713547998 + ... + 3197713548001.

It is an arithmetic number, because the mean of its divisors is an integer number (4796570322000).

Almost surely, 2^{12790854191998} is an apocalyptic number.

12790854191998 is a deficient number, since it is larger than the sum of its proper divisors (6395427096002).

12790854191998 is an equidigital number, since it uses as much as digits as its factorization.

12790854191998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395427096001.

The product of its (nonzero) digits is 117573120, while the sum is 73.

The spelling of 12790854191998 in words is "twelve trillion, seven hundred ninety billion, eight hundred fifty-four million, one hundred ninety-one thousand, nine hundred ninety-eight".