213418128783 has 8 divisors (see below), whose sum is σ = 284559968896. Its totient is φ = 142277520600.

The previous prime is 213418128761. The next prime is 213418128799. The reversal of 213418128783 is 387821814312.

It is a Cunningham number, because it is equal to 461972²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213418128783 - 2⁸ = 213418128527 is a prime.

It is a super-2 number, since 2×213418128783² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213418128283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230988 + ... + 692958.

It is an arithmetic number, because the mean of its divisors is an integer number (35569996112).

Almost surely, 2^213418128783 is an apocalyptic number.

213418128783 is a deficient number, since it is larger than the sum of its proper divisors (71141840113).

213418128783 is a wasteful number, since it uses less digits than its factorization.

213418128783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615965.

The product of its digits is 516096, while the sum is 48.

The spelling of 213418128783 in words is "two hundred thirteen billion, four hundred eighteen million, one hundred twenty-eight thousand, seven hundred eighty-three".