80786243520 has 168 divisors, whose sum is σ = 278954782704. Its totient is φ = 21458976768.

The previous prime is 80786243509. The next prime is 80786243537. The reversal of 80786243520 is 2534268708.

80786243520 is a `hidden beast` number, since 8 + 0 + 7 + 86 + 2 + 43 + 520 = 666.

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 23 ways as a sum of consecutive naturals, for example, 685587 + ... + 794733.

Almost surely, 2^80786243520 is an apocalyptic number.

80786243520 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 80786243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139477391352).

80786243520 is an abundant number, since it is smaller than the sum of its proper divisors (198168539184).

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

80786243520 is a wasteful number, since it uses less digits than its factorization.

80786243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109427 (or 109414 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 80786243520 in words is "eighty billion, seven hundred eighty-six million, two hundred forty-three thousand, five hundred twenty".