128406469719 has 16 divisors (see below), whose sum is σ = 186787923840. Its totient is φ = 77815904160.

The previous prime is 128406469703. The next prime is 128406469759. The reversal of 128406469719 is 917964604821.

It is not a de Polignac number, because 128406469719 - 2⁴ = 128406469703 is a prime.

It is a super-3 number, since 3×128406469719³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128406469759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284184 + ... + 581010.

It is an arithmetic number, because the mean of its divisors is an integer number (11674245240).

Almost surely, 2^128406469719 is an apocalyptic number.

128406469719 is a deficient number, since it is larger than the sum of its proper divisors (58381454121).

128406469719 is a wasteful number, since it uses less digits than its factorization.

128406469719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309950.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 128406469719 in words is "one hundred twenty-eight billion, four hundred six million, four hundred sixty-nine thousand, seven hundred nineteen".