128151495780 has 384 divisors, whose sum is σ = 460530524160. Its totient is φ = 25848668160.

The previous prime is 128151495757. The next prime is 128151495781. The reversal of 128151495780 is 87594151821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128151495781) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 127007916 + ... + 127008924.

It is an arithmetic number, because the mean of its divisors is an integer number (1199298240).

Almost surely, 2^128151495780 is an apocalyptic number.

128151495780 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 128151495780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230265262080).

128151495780 is an abundant number, since it is smaller than the sum of its proper divisors (332379028380).

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

128151495780 is a wasteful number, since it uses less digits than its factorization.

128151495780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 51.

The spelling of 128151495780 in words is "one hundred twenty-eight billion, one hundred fifty-one million, four hundred ninety-five thousand, seven hundred eighty".