128040051558720 has 336 divisors, whose sum is σ = 481175709475968. Its totient is φ = 28257113579520.

The previous prime is 128040051558667. The next prime is 128040051558781. The reversal of 128040051558720 is 27855150040821.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 128040051558720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5676411 + ... + 16979450.

Almost surely, 2^{128040051558720} is an apocalyptic number.

128040051558720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128040051558720 is an abundant number, since it is smaller than the sum of its proper divisors (353135657917248).

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

128040051558720 is a wasteful number, since it uses less digits than its factorization.

128040051558720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22655946 (or 22655907 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 48.

The spelling of 128040051558720 in words is "one hundred twenty-eight trillion, forty billion, fifty-one million, five hundred fifty-eight thousand, seven hundred twenty".