128762464880 has 160 divisors (see below), whose sum is σ = 368206611840. Its totient is φ = 40868904960.

The previous prime is 128762464793. The next prime is 128762464891. The reversal of 128762464880 is 88464267821.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

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, 469856 + ... + 691584.

It is an arithmetic number, because the mean of its divisors is an integer number (2301291324).

Almost surely, 2^128762464880 is an apocalyptic number.

128762464880 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 128762464880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184103305920).

128762464880 is an abundant number, since it is smaller than the sum of its proper divisors (239444146960).

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

128762464880 is a wasteful number, since it uses less digits than its factorization.

128762464880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221827 (or 221821 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 128762464880 in words is "one hundred twenty-eight billion, seven hundred sixty-two million, four hundred sixty-four thousand, eight hundred eighty".