13100402091820 has 36 divisors (see below), whose sum is σ = 27863491277664. Its totient is φ = 5173829637600.

The previous prime is 13100402091817. The next prime is 13100402091853. The reversal of 13100402091820 is 2819020400131.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52352356 + ... + 52601995.

It is an arithmetic number, because the mean of its divisors is an integer number (773985868824).

Almost surely, 2^{13100402091820} is an apocalyptic number.

13100402091820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13100402091820 is an abundant number, since it is smaller than the sum of its proper divisors (14763089185844).

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

13100402091820 is a wasteful number, since it uses less digits than its factorization.

13100402091820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104954518 (or 104954437 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 13100402091820 its reverse (2819020400131), we get a palindrome (15919422491951).

The spelling of 13100402091820 in words is "thirteen trillion, one hundred billion, four hundred two million, ninety-one thousand, eight hundred twenty".