80694889920 has 168 divisors, whose sum is σ = 277933830720. Its totient is φ = 21489408000.

The previous prime is 80694889909. The next prime is 80694889963. The reversal of 80694889920 is 2998849608.

80694889920 is a `hidden beast` number, since 8 + 0 + 69 + 488 + 9 + 92 + 0 = 666.

It is a super-3 number, since 3×80694889920³ (a number of 34 digits) contains 333 as substring.

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, 2144226 + ... + 2181534.

It is an arithmetic number, because the mean of its divisors is an integer number (1654368040).

Almost surely, 2^80694889920 is an apocalyptic number.

80694889920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80694889920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138966915360).

80694889920 is an abundant number, since it is smaller than the sum of its proper divisors (197238940800).

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

80694889920 is a wasteful number, since it uses less digits than its factorization.

80694889920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38083 (or 38070 counting only the distinct ones).

The product of its (nonzero) digits is 17915904, while the sum is 63.

The spelling of 80694889920 in words is "eighty billion, six hundred ninety-four million, eight hundred eighty-nine thousand, nine hundred twenty".