80115315840 has 1024 divisors, whose sum is σ = 337957171200. Its totient is φ = 17557585920.

The previous prime is 80115315821. The next prime is 80115315877. The reversal of 80115315840 is 4851351108.

80115315840 is a `hidden beast` number, since 80 + 1 + 1 + 531 + 5 + 8 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 80115315795 and 80115315804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 379693335 + ... + 379693545.

It is an arithmetic number, because the mean of its divisors is an integer number (330036300).

Almost surely, 2^80115315840 is an apocalyptic number.

80115315840 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 80115315840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168978585600).

80115315840 is an abundant number, since it is smaller than the sum of its proper divisors (257841855360).

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

80115315840 is a wasteful number, since it uses less digits than its factorization.

80115315840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

Adding to 80115315840 its reverse (4851351108), we get a palindrome (84966666948).

The spelling of 80115315840 in words is "eighty billion, one hundred fifteen million, three hundred fifteen thousand, eight hundred forty".