128345515863057 has 24 divisors (see below), whose sum is σ = 185434185474720. Its totient is φ = 85542347218560.

The previous prime is 128345515862951. The next prime is 128345515863133. The reversal of 128345515863057 is 750368515543821.

128345515863057 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 4 + 5 + 515 + 8 + 63 + 0 + 57 = 666.

It is not a de Polignac number, because 128345515863057 - 2¹⁵ = 128345515830289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128345515862985 and 128345515863003.

It is not an unprimeable number, because it can be changed into a prime (128345515863157) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1829838694 + ... + 1829908832.

It is an arithmetic number, because the mean of its divisors is an integer number (7726424394780).

Almost surely, 2^{128345515863057} is an apocalyptic number.

It is an amenable number.

128345515863057 is a deficient number, since it is larger than the sum of its proper divisors (57088669611663).

128345515863057 is a wasteful number, since it uses less digits than its factorization.

128345515863057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117933 (or 117930 counting only the distinct ones).

The product of its (nonzero) digits is 120960000, while the sum is 63.

The spelling of 128345515863057 in words is "one hundred twenty-eight trillion, three hundred forty-five billion, five hundred fifteen million, eight hundred sixty-three thousand, fifty-seven".