128562862442 has 16 divisors (see below), whose sum is σ = 220943097792. Its totient is φ = 54960964800.

The previous prime is 128562862399. The next prime is 128562862451. The reversal of 128562862442 is 244268265821.

It is a super-2 number, since 2×128562862442² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11444588 + ... + 11455815.

It is an arithmetic number, because the mean of its divisors is an integer number (13808943612).

Almost surely, 2^128562862442 is an apocalyptic number.

128562862442 is a deficient number, since it is larger than the sum of its proper divisors (92380235350).

128562862442 is a wasteful number, since it uses less digits than its factorization.

128562862442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22900813.

The product of its digits is 2949120, while the sum is 50.

The spelling of 128562862442 in words is "one hundred twenty-eight billion, five hundred sixty-two million, eight hundred sixty-two thousand, four hundred forty-two".