128547623673 has 64 divisors (see below), whose sum is σ = 223246425600. Its totient is φ = 71588033280.

The previous prime is 128547623669. The next prime is 128547623707. The reversal of 128547623673 is 376326745821.

It is a happy number.

128547623673 is a `hidden beast` number, since 1 + 2 + 8 + 5 + 4 + 7 + 623 + 6 + 7 + 3 = 666.

It is not a de Polignac number, because 128547623673 - 2² = 128547623669 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128547623653) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1205515 + ... + 1307807.

It is an arithmetic number, because the mean of its divisors is an integer number (3488225400).

Almost surely, 2^128547623673 is an apocalyptic number.

It is an amenable number.

128547623673 is a deficient number, since it is larger than the sum of its proper divisors (94698801927).

128547623673 is a wasteful number, since it uses less digits than its factorization.

128547623673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102479 (or 102473 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 128547623673 in words is "one hundred twenty-eight billion, five hundred forty-seven million, six hundred twenty-three thousand, six hundred seventy-three".