213912903361797 has 16 divisors (see below), whose sum is σ = 316942795992000. Its totient is φ = 142592946286032.

The previous prime is 213912903361693. The next prime is 213912903361811. The reversal of 213912903361797 is 797163309219312.

213912903361797 is a `hidden beast` number, since 2 + 1 + 3 + 9 + 1 + 2 + 9 + 0 + 3 + 3 + 617 + 9 + 7 = 666.

It is not a de Polignac number, because 213912903361797 - 2⁸ = 213912903361541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213912903361097) 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, 434637147 + ... + 435129032.

It is an arithmetic number, because the mean of its divisors is an integer number (19808924749500).

Almost surely, 2^{213912903361797} is an apocalyptic number.

213912903361797 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

213912903361797 is a deficient number, since it is larger than the sum of its proper divisors (103029892630203).

213912903361797 is an equidigital number, since it uses as much as digits as its factorization.

213912903361797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869775297 (or 869775291 counting only the distinct ones).

The product of its (nonzero) digits is 23147208, while the sum is 63.

The spelling of 213912903361797 in words is "two hundred thirteen trillion, nine hundred twelve billion, nine hundred three million, three hundred sixty-one thousand, seven hundred ninety-seven".