213420792491 has 6 divisors (see below), whose sum is σ = 225244659492. Its totient is φ = 202188118860.

The previous prime is 213420792479. The next prime is 213420792511. The reversal of 213420792491 is 194297024312.

It is a de Polignac number, because none of the positive numbers 2^k-213420792491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213420792461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295596305 + ... + 295597026.

It is an arithmetic number, because the mean of its divisors is an integer number (37540776582).

Almost surely, 2^213420792491 is an apocalyptic number.

213420792491 is a deficient number, since it is larger than the sum of its proper divisors (11823867001).

213420792491 is an equidigital number, since it uses as much as digits as its factorization.

213420792491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591193369 (or 591193350 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 213420792491 in words is "two hundred thirteen billion, four hundred twenty million, seven hundred ninety-two thousand, four hundred ninety-one".