128347607750 has 32 divisors (see below), whose sum is σ = 252912348000. Its totient is φ = 48636986400.

The previous prime is 128347607719. The next prime is 128347607789. The reversal of 128347607750 is 57706743821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13505525 + ... + 13515024.

It is an arithmetic number, because the mean of its divisors is an integer number (7903510875).

Almost surely, 2^128347607750 is an apocalyptic number.

128347607750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128347607750 is a deficient number, since it is larger than the sum of its proper divisors (124564740250).

128347607750 is a wasteful number, since it uses less digits than its factorization.

128347607750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27020585 (or 27020575 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 128347607750 in words is "one hundred twenty-eight billion, three hundred forty-seven million, six hundred seven thousand, seven hundred fifty".