80825590647 has 12 divisors (see below), whose sum is σ = 116750929464. Its totient is φ = 53882409840.

The previous prime is 80825590613. The next prime is 80825590661. The reversal of 80825590647 is 74609552808.

80825590647 is a `hidden beast` number, since 8 + 0 + 8 + 2 + 5 + 590 + 6 + 47 = 666.

It is not a de Polignac number, because 80825590647 - 2¹⁸ = 80825328503 is a prime.

It is a super-2 number, since 2×80825590647² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80825590593 and 80825590602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80825590667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406753 + ... + 571925.

It is an arithmetic number, because the mean of its divisors is an integer number (9729244122).

Almost surely, 2^80825590647 is an apocalyptic number.

80825590647 is a deficient number, since it is larger than the sum of its proper divisors (35925338817).

80825590647 is a wasteful number, since it uses less digits than its factorization.

80825590647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219550 (or 219547 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The spelling of 80825590647 in words is "eighty billion, eight hundred twenty-five million, five hundred ninety thousand, six hundred forty-seven".