128916325450 has 48 divisors (see below), whose sum is σ = 262266356736. Its totient is φ = 46756188800.

The previous prime is 128916325409. The next prime is 128916325501. The reversal of 128916325450 is 54523619821.

It is a self number, because there is not a number n which added to its sum of digits gives 128916325450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95347 + ... + 516646.

It is an arithmetic number, because the mean of its divisors is an integer number (5463882432).

Almost surely, 2^128916325450 is an apocalyptic number.

128916325450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128916325450 is an abundant number, since it is smaller than the sum of its proper divisors (133350031286).

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

128916325450 is a wasteful number, since it uses less digits than its factorization.

128916325450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612399 (or 612394 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 128916325450 in words is "one hundred twenty-eight billion, nine hundred sixteen million, three hundred twenty-five thousand, four hundred fifty".