7897452547986 has 64 divisors (see below), whose sum is σ = 18181422044160. Its totient is φ = 2538368202240.

The previous prime is 7897452547877. The next prime is 7897452547987. The reversal of 7897452547986 is 6897452547987.

7897452547986 is a `hidden beast` number, since 7 + 8 + 9 + 7 + 4 + 525 + 4 + 7 + 9 + 86 = 666.

It is not an unprimeable number, because it can be changed into a prime (7897452547987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8052031 + ... + 8979426.

It is an arithmetic number, because the mean of its divisors is an integer number (284084719440).

Almost surely, 2^{7897452547986} is an apocalyptic number.

7897452547986 is an abundant number, since it is smaller than the sum of its proper divisors (10283969496174).

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

7897452547986 is a wasteful number, since it uses less digits than its factorization.

7897452547986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17031776 (or 17031770 counting only the distinct ones).

The product of its digits is 8534937600, while the sum is 81.

Subtracting from 7897452547986 its reverse (6897452547987), we obtain a palindrome (999999999999).

The spelling of 7897452547986 in words is "seven trillion, eight hundred ninety-seven billion, four hundred fifty-two million, five hundred forty-seven thousand, nine hundred eighty-six".