128340461552 has 20 divisors (see below), whose sum is σ = 248736943656. Its totient is φ = 64150282560.

The previous prime is 128340461549. The next prime is 128340461609. The reversal of 128340461552 is 255164043821.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193618 + ... + 1296689.

Almost surely, 2^128340461552 is an apocalyptic number.

It is an amenable number.

128340461552 is a deficient number, since it is larger than the sum of its proper divisors (120396482104).

128340461552 is a wasteful number, since it uses less digits than its factorization.

128340461552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493536 (or 2493530 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 128340461552 in words is "one hundred twenty-eight billion, three hundred forty million, four hundred sixty-one thousand, five hundred fifty-two".