128347283457 has 16 divisors (see below), whose sum is σ = 190159831680. Its totient is φ = 85557787056.

The previous prime is 128347283431. The next prime is 128347283531. The reversal of 128347283457 is 754382743821.

It is a happy number.

128347283457 is a `hidden beast` number, since 1 + 283 + 47 + 283 + 45 + 7 = 666.

It is not a de Polignac number, because 128347283457 - 2¹⁹ = 128346759169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128347283257) 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, 147483 + ... + 527679.

It is an arithmetic number, because the mean of its divisors is an integer number (11884989480).

Almost surely, 2^128347283457 is an apocalyptic number.

It is an amenable number.

128347283457 is a deficient number, since it is larger than the sum of its proper divisors (61812548223).

128347283457 is a wasteful number, since it uses less digits than its factorization.

128347283457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392709 (or 392703 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The spelling of 128347283457 in words is "one hundred twenty-eight billion, three hundred forty-seven million, two hundred eighty-three thousand, four hundred fifty-seven".