80425923840 has 864 divisors, whose sum is σ = 314272358400. Its totient is φ = 19617914880.

The previous prime is 80425923797. The next prime is 80425923869. The reversal of 80425923840 is 4832952408.

It is a tau number, because it is divible by the number of its divisors (864).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183202341 + ... + 183202779.

Almost surely, 2^80425923840 is an apocalyptic number.

80425923840 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 80425923840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157136179200).

80425923840 is an abundant number, since it is smaller than the sum of its proper divisors (233846434560).

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

80425923840 is a wasteful number, since it uses less digits than its factorization.

80425923840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 80425923840 in words is "eighty billion, four hundred twenty-five million, nine hundred twenty-three thousand, eight hundred forty".