128396466826 has 8 divisors (see below), whose sum is σ = 192720501504. Its totient is φ = 64156299660.

The previous prime is 128396466799. The next prime is 128396466853. The reversal of 128396466826 is 628664693821.

It is an interprime number because it is at equal distance from previous prime (128396466799) and next prime (128396466853).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20963050 + ... + 20969173.

It is an arithmetic number, because the mean of its divisors is an integer number (24090062688).

Almost surely, 2^128396466826 is an apocalyptic number.

128396466826 is a deficient number, since it is larger than the sum of its proper divisors (64324034678).

128396466826 is a wasteful number, since it uses less digits than its factorization.

128396466826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41933756.

The product of its digits is 35831808, while the sum is 61.

The spelling of 128396466826 in words is "one hundred twenty-eight billion, three hundred ninety-six million, four hundred sixty-six thousand, eight hundred twenty-six".