7897452548020 has 144 divisors (see below), whose sum is σ = 19819683918720. Its totient is φ = 2633729769216.

The previous prime is 7897452547987. The next prime is 7897452548021. The reversal of 7897452548020 is 208452547987.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7897452548020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7897452548021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 128293369 + ... + 128354911.

It is an arithmetic number, because the mean of its divisors is an integer number (137636693880).

Almost surely, 2^{7897452548020} is an apocalyptic number.

7897452548020 is a gapful number since it is divisible by the number (70) 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 7897452548020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9909841959360).

7897452548020 is an abundant number, since it is smaller than the sum of its proper divisors (11922231370700).

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

7897452548020 is a wasteful number, since it uses less digits than its factorization.

7897452548020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65142 (or 65133 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 7897452548020 in words is "seven trillion, eight hundred ninety-seven billion, four hundred fifty-two million, five hundred forty-eight thousand, twenty".