80898880638 has 32 divisors (see below), whose sum is σ = 164725171200. Its totient is φ = 26479870560.

The previous prime is 80898880603. The next prime is 80898880639. The reversal of 80898880638 is 83608889808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80898880639) by changing a digit.

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, 34731 + ... + 403737.

It is an arithmetic number, because the mean of its divisors is an integer number (5147661600).

Almost surely, 2^80898880638 is an apocalyptic number.

80898880638 is an abundant number, since it is smaller than the sum of its proper divisors (83826290562).

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

80898880638 is a wasteful number, since it uses less digits than its factorization.

80898880638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369672.

The product of its (nonzero) digits is 42467328, while the sum is 66.

The spelling of 80898880638 in words is "eighty billion, eight hundred ninety-eight million, eight hundred eighty thousand, six hundred thirty-eight".