8455478969952 has 384 divisors, whose sum is σ = 28824144814080. Its totient is φ = 2361612464640.

The previous prime is 8455478969941. The next prime is 8455478969969. The reversal of 8455478969952 is 2599698745548.

8455478969952 is a `hidden beast` number, since 8 + 4 + 5 + 5 + 478 + 9 + 6 + 99 + 52 = 666.

It is a super-2 number, since 2×8455478969952² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53003653 + ... + 53162939.

It is an arithmetic number, because the mean of its divisors is an integer number (75062877120).

Almost surely, 2^{8455478969952} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8455478969952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14412072407040).

8455478969952 is an abundant number, since it is smaller than the sum of its proper divisors (20368665844128).

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

8455478969952 is a wasteful number, since it uses less digits than its factorization.

8455478969952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159511 (or 159497 counting only the distinct ones).

The product of its digits is 7838208000, while the sum is 81.

The spelling of 8455478969952 in words is "eight trillion, four hundred fifty-five billion, four hundred seventy-eight million, nine hundred sixty-nine thousand, nine hundred fifty-two".