128154717815 has 16 divisors (see below), whose sum is σ = 155251658016. Its totient is φ = 101550960000.

The previous prime is 128154717797. The next prime is 128154717827. The reversal of 128154717815 is 518717451821.

It is not a de Polignac number, because 128154717815 - 2¹² = 128154713719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54932 + ... + 509241.

It is an arithmetic number, because the mean of its divisors is an integer number (9703228626).

Almost surely, 2^128154717815 is an apocalyptic number.

128154717815 is a deficient number, since it is larger than the sum of its proper divisors (27096940201).

128154717815 is a wasteful number, since it uses less digits than its factorization.

128154717815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564610.

The product of its digits is 627200, while the sum is 50.

The spelling of 128154717815 in words is "one hundred twenty-eight billion, one hundred fifty-four million, seven hundred seventeen thousand, eight hundred fifteen".