128642613530 has 48 divisors (see below), whose sum is σ = 255010944384. Its totient is φ = 46629237600.

The previous prime is 128642613529. The next prime is 128642613551. The reversal of 128642613530 is 35316246821.

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 23 ways as a sum of consecutive naturals, for example, 691646 + ... + 857705.

It is an arithmetic number, because the mean of its divisors is an integer number (5312728008).

Almost surely, 2^128642613530 is an apocalyptic number.

128642613530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128642613530 is a deficient number, since it is larger than the sum of its proper divisors (126368330854).

128642613530 is a wasteful number, since it uses less digits than its factorization.

128642613530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549419 (or 1549400 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 128642613530 in words is "one hundred twenty-eight billion, six hundred forty-two million, six hundred thirteen thousand, five hundred thirty".