80688409109638 has 48 divisors (see below), whose sum is σ = 136800313080480. Its totient is φ = 35641177925760.

The previous prime is 80688409109551. The next prime is 80688409109639. The reversal of 80688409109638 is 83690190488608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80688409109639) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1674295 + ... + 12813277.

It is an arithmetic number, because the mean of its divisors is an integer number (2850006522510).

Almost surely, 2^{80688409109638} is an apocalyptic number.

80688409109638 is a deficient number, since it is larger than the sum of its proper divisors (56111903970842).

80688409109638 is a wasteful number, since it uses less digits than its factorization.

80688409109638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11139853 (or 11139842 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 70.

The spelling of 80688409109638 in words is "eighty trillion, six hundred eighty-eight billion, four hundred nine million, one hundred nine thousand, six hundred thirty-eight".