128561750346 has 16 divisors (see below), whose sum is σ = 257421452544. Its totient is φ = 42804258144.

The previous prime is 128561750281. The next prime is 128561750353. The reversal of 128561750346 is 643057165821.

It is a super-2 number, since 2×128561750346² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128561750295 and 128561750304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12409051 + ... + 12419406.

It is an arithmetic number, because the mean of its divisors is an integer number (16088840784).

Almost surely, 2^128561750346 is an apocalyptic number.

128561750346 is an abundant number, since it is smaller than the sum of its proper divisors (128859702198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128561750346 is a wasteful number, since it uses less digits than its factorization.

128561750346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24829325.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 128561750346 in words is "one hundred twenty-eight billion, five hundred sixty-one million, seven hundred fifty thousand, three hundred forty-six".