80995445040 has 160 divisors (see below), whose sum is σ = 266320454400. Its totient is φ = 20305658880.

The previous prime is 80995445039. The next prime is 80995445077. The reversal of 80995445040 is 4054459908.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529566 + ... + 665154.

It is an arithmetic number, because the mean of its divisors is an integer number (1664502840).

Almost surely, 2^80995445040 is an apocalyptic number.

80995445040 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 80995445040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133160227200).

80995445040 is an abundant number, since it is smaller than the sum of its proper divisors (185325009360).

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

80995445040 is a wasteful number, since it uses less digits than its factorization.

80995445040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135755 (or 135749 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 80995445040 in words is "eighty billion, nine hundred ninety-five million, four hundred forty-five thousand, forty".