80999481129090 has 128 divisors (see below), whose sum is σ = 208900286668800. Its totient is φ = 20053458796800.

The previous prime is 80999481129089. The next prime is 80999481129157. The reversal of 80999481129090 is 9092118499908.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9376761 + ... + 15808940.

It is an arithmetic number, because the mean of its divisors is an integer number (1632033489600).

Almost surely, 2^{80999481129090} is an apocalyptic number.

80999481129090 is an abundant number, since it is smaller than the sum of its proper divisors (127900805539710).

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

80999481129090 is a wasteful number, since it uses less digits than its factorization.

80999481129090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25185872.

The product of its (nonzero) digits is 30233088, while the sum is 69.

The spelling of 80999481129090 in words is "eighty trillion, nine hundred ninety-nine billion, four hundred eighty-one million, one hundred twenty-nine thousand, ninety".