128862684023 has 4 divisors (see below), whose sum is σ = 128864987448. Its totient is φ = 128860380600.

The previous prime is 128862684019. The next prime is 128862684029. The reversal of 128862684023 is 320486268821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128862684023 - 2² = 128862684019 is a prime.

It is a super-2 number, since 2×128862684023² (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 (128862684029) 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, 1065653 + ... + 1180398.

It is an arithmetic number, because the mean of its divisors is an integer number (32216246862).

Almost surely, 2^128862684023 is an apocalyptic number.

128862684023 is a deficient number, since it is larger than the sum of its proper divisors (2303425).

128862684023 is an equidigital number, since it uses as much as digits as its factorization.

128862684023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303424.

The product of its (nonzero) digits is 1769472, while the sum is 50.

The spelling of 128862684023 in words is "one hundred twenty-eight billion, eight hundred sixty-two million, six hundred eighty-four thousand, twenty-three".