8442513520551 has 48 divisors (see below), whose sum is σ = 13322968783488. Its totient is φ = 5109134097600.

The previous prime is 8442513520547. The next prime is 8442513520561. The reversal of 8442513520551 is 1550253152448.

8442513520551 is a `hidden beast` number, since 8 + 4 + 42 + 5 + 1 + 3 + 52 + 0 + 551 = 666.

It is not a de Polignac number, because 8442513520551 - 2² = 8442513520547 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8442513520497 and 8442513520506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442513520501) 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, 419660545 + ... + 419680661.

It is an arithmetic number, because the mean of its divisors is an integer number (277561849656).

Almost surely, 2^{8442513520551} is an apocalyptic number.

8442513520551 is a deficient number, since it is larger than the sum of its proper divisors (4880455262937).

8442513520551 is a wasteful number, since it uses less digits than its factorization.

8442513520551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26172 (or 26169 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 45.

Adding to 8442513520551 its reverse (1550253152448), we get a palindrome (9992766672999).

The spelling of 8442513520551 in words is "eight trillion, four hundred forty-two billion, five hundred thirteen million, five hundred twenty thousand, five hundred fifty-one".