818257023373 has 4 divisors (see below), whose sum is σ = 822828291840. Its totient is φ = 813685754908.

The previous prime is 818257023361. The next prime is 818257023403. The reversal of 818257023373 is 373320752818.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 818257023373 - 2¹⁷ = 818256892301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818257023973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285633965 + ... + 2285634322.

It is an arithmetic number, because the mean of its divisors is an integer number (205707072960).

Almost surely, 2^818257023373 is an apocalyptic number.

It is an amenable number.

818257023373 is a deficient number, since it is larger than the sum of its proper divisors (4571268467).

818257023373 is a wasteful number, since it uses less digits than its factorization.

818257023373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571268466.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 818257023373 in words is "eight hundred eighteen billion, two hundred fifty-seven million, twenty-three thousand, three hundred seventy-three".