80188356880 has 40 divisors (see below), whose sum is σ = 186512062464. Its totient is φ = 32062588800.

The previous prime is 80188356863. The next prime is 80188356949. The reversal of 80188356880 is 8865388108.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×80188356880² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4465 + ... + 400495.

Almost surely, 2^80188356880 is an apocalyptic number.

80188356880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80188356880 is an abundant number, since it is smaller than the sum of its proper divisors (106323705584).

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

80188356880 is a wasteful number, since it uses less digits than its factorization.

80188356880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398575 (or 398569 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 55.

The spelling of 80188356880 in words is "eighty billion, one hundred eighty-eight million, three hundred fifty-six thousand, eight hundred eighty".