128699756155358 has 16 divisors (see below), whose sum is σ = 193118142026736. Its totient is φ = 64327043425920.

The previous prime is 128699756155357. The next prime is 128699756155393. The reversal of 128699756155358 is 853551657996821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128699756155357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213492728 + ... + 214094708.

It is an arithmetic number, because the mean of its divisors is an integer number (12069883876671).

Almost surely, 2^{128699756155358} is an apocalyptic number.

128699756155358 is a deficient number, since it is larger than the sum of its proper divisors (64418385871378).

128699756155358 is a wasteful number, since it uses less digits than its factorization.

128699756155358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639739.

The product of its digits is 4898880000, while the sum is 80.

The spelling of 128699756155358 in words is "one hundred twenty-eight trillion, six hundred ninety-nine billion, seven hundred fifty-six million, one hundred fifty-five thousand, three hundred fifty-eight".