128962532780 has 48 divisors (see below), whose sum is σ = 287818181280. Its totient is φ = 48370080768.

The previous prime is 128962532773. The next prime is 128962532821. The reversal of 128962532780 is 87235269821.

It is a super-2 number, since 2×128962532780² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613562 + ... + 796481.

It is an arithmetic number, because the mean of its divisors is an integer number (5996212110).

Almost surely, 2^128962532780 is an apocalyptic number.

128962532780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128962532780 is an abundant number, since it is smaller than the sum of its proper divisors (158855648500).

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

128962532780 is a wasteful number, since it uses less digits than its factorization.

128962532780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410338 (or 1410336 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 128962532780 in words is "one hundred twenty-eight billion, nine hundred sixty-two million, five hundred thirty-two thousand, seven hundred eighty".