128492533328640 has 288 divisors, whose sum is σ = 441975999956736. Its totient is φ = 31626368040960.

The previous prime is 128492533328639. The next prime is 128492533328651. The reversal of 128492533328640 is 46823335294821.

It is a super-2 number, since 2×128492533328640² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657398607 + ... + 657594033.

Almost surely, 2^{128492533328640} is an apocalyptic number.

128492533328640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128492533328640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220987999978368).

128492533328640 is an abundant number, since it is smaller than the sum of its proper divisors (313483466628096).

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

128492533328640 is a wasteful number, since it uses less digits than its factorization.

128492533328640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208635 (or 208621 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 60.

The spelling of 128492533328640 in words is "one hundred twenty-eight trillion, four hundred ninety-two billion, five hundred thirty-three million, three hundred twenty-eight thousand, six hundred forty".