80661443754 has 8 divisors (see below), whose sum is σ = 161322887520. Its totient is φ = 26887147916.

The previous prime is 80661443699. The next prime is 80661443803. The reversal of 80661443754 is 45734416608.

It is a sphenic number, since it is the product of 3 distinct primes.

80661443754 is an admirable number.

It is a super-2 number, since 2×80661443754² (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 3 ways as a sum of consecutive naturals, for example, 6721786974 + ... + 6721786985.

It is an arithmetic number, because the mean of its divisors is an integer number (20165360940).

Almost surely, 2^80661443754 is an apocalyptic number.

80661443754 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

80661443754 is a wasteful number, since it uses less digits than its factorization.

80661443754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13443573964.

The product of its (nonzero) digits is 1935360, while the sum is 48.

The spelling of 80661443754 in words is "eighty billion, six hundred sixty-one million, four hundred forty-three thousand, seven hundred fifty-four".