80990487699400 has 96 divisors (see below), whose sum is σ = 194460024833280. Its totient is φ = 31337792928000.

The previous prime is 80990487699383. The next prime is 80990487699409. The reversal of 80990487699400 is 499678409908.

It is not an unprimeable number, because it can be changed into a prime (80990487699409) 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, 11768490 + ... + 17334310.

It is an arithmetic number, because the mean of its divisors is an integer number (2025625258680).

Almost surely, 2^{80990487699400} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80990487699400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97230012416640).

80990487699400 is an abundant number, since it is smaller than the sum of its proper divisors (113469537133880).

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

80990487699400 is a wasteful number, since it uses less digits than its factorization.

80990487699400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568215 (or 5568206 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 73.

The spelling of 80990487699400 in words is "eighty trillion, nine hundred ninety billion, four hundred eighty-seven million, six hundred ninety-nine thousand, four hundred".