128465021080 has 64 divisors (see below), whose sum is σ = 316631890080. Its totient is φ = 46520678400.

The previous prime is 128465021051. The next prime is 128465021107. The reversal of 128465021080 is 80120564821.

It is a congruent number.

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, 499699 + ... + 711778.

Almost surely, 2^128465021080 is an apocalyptic number.

128465021080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128465021080 is an abundant number, since it is smaller than the sum of its proper divisors (188166869000).

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

128465021080 is a wasteful number, since it uses less digits than its factorization.

128465021080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211740 (or 1211736 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 128465021080 in words is "one hundred twenty-eight billion, four hundred sixty-five million, twenty-one thousand, eighty".