128005771631630 has 48 divisors (see below), whose sum is σ = 248434167245472. Its totient is φ = 47396246356800.

The previous prime is 128005771631627. The next prime is 128005771631659. The reversal of 128005771631630 is 36136177500821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 289345481 + ... + 289787540.

It is an arithmetic number, because the mean of its divisors is an integer number (5175711817614).

Almost surely, 2^{128005771631630} is an apocalyptic number.

128005771631630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128005771631630 is a deficient number, since it is larger than the sum of its proper divisors (120428395613842).

128005771631630 is a wasteful number, since it uses less digits than its factorization.

128005771631630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579133113 (or 579133082 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 128005771631630 in words is "one hundred twenty-eight trillion, five billion, seven hundred seventy-one million, six hundred thirty-one thousand, six hundred thirty".