128763279390 has 32 divisors (see below), whose sum is σ = 316569236256. Its totient is φ = 33499389440.

The previous prime is 128763279371. The next prime is 128763279451. The reversal of 128763279390 is 93972367821.

It is a self number, because there is not a number n which added to its sum of digits gives 128763279390.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52341567 + ... + 52344026.

It is an arithmetic number, because the mean of its divisors is an integer number (9892788633).

Almost surely, 2^128763279390 is an apocalyptic number.

128763279390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128763279390 is an abundant number, since it is smaller than the sum of its proper divisors (187805956866).

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

128763279390 is a wasteful number, since it uses less digits than its factorization.

128763279390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104685644.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 128763279390 in words is "one hundred twenty-eight billion, seven hundred sixty-three million, two hundred seventy-nine thousand, three hundred ninety".