128496726854 has 8 divisors (see below), whose sum is σ = 193327402728. Its totient is φ = 64054259280.

The previous prime is 128496726781. The next prime is 128496726857. The reversal of 128496726854 is 458627694821.

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

It is a super-2 number, since 2×128496726854² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128496726857) 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, 97051247 + ... + 97052570.

It is an arithmetic number, because the mean of its divisors is an integer number (24165925341).

Almost surely, 2^128496726854 is an apocalyptic number.

128496726854 is a deficient number, since it is larger than the sum of its proper divisors (64830675874).

128496726854 is a wasteful number, since it uses less digits than its factorization.

128496726854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194104150.

The product of its digits is 46448640, while the sum is 62.

The spelling of 128496726854 in words is "one hundred twenty-eight billion, four hundred ninety-six million, seven hundred twenty-six thousand, eight hundred fifty-four".