80849187072 has 216 divisors, whose sum is σ = 247645725600. Its totient is φ = 26291589120.

The previous prime is 80849187037. The next prime is 80849187073. The reversal of 80849187072 is 27078194808.

It is a happy number.

80849187072 is a `hidden beast` number, since 8 + 0 + 8 + 491 + 87 + 0 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (80849187073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2534679 + ... + 2566377.

Almost surely, 2^80849187072 is an apocalyptic number.

80849187072 is a gapful number since it is divisible by the number (82) 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 80849187072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123822862800).

80849187072 is an abundant number, since it is smaller than the sum of its proper divisors (166796538528).

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

80849187072 is an equidigital number, since it uses as much as digits as its factorization.

80849187072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31771 (or 31745 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The spelling of 80849187072 in words is "eighty billion, eight hundred forty-nine million, one hundred eighty-seven thousand, seventy-two".