128807507830 has 8 divisors (see below), whose sum is σ = 231853514112. Its totient is φ = 51523003128.

The previous prime is 128807507827. The next prime is 128807507833. The reversal of 128807507830 is 38705708821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (128807507827) and next prime (128807507833).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128807507830² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128807507833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6440375382 + ... + 6440375401.

It is an arithmetic number, because the mean of its divisors is an integer number (28981689264).

Almost surely, 2^128807507830 is an apocalyptic number.

128807507830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128807507830 is a deficient number, since it is larger than the sum of its proper divisors (103046006282).

128807507830 is a wasteful number, since it uses less digits than its factorization.

128807507830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880750790.

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 128807507830 in words is "one hundred twenty-eight billion, eight hundred seven million, five hundred seven thousand, eight hundred thirty".