8464772898855 has 512 divisors, whose sum is σ = 19559382958080. Its totient is φ = 3378581176320.

The previous prime is 8464772898847. The next prime is 8464772898859. The reversal of 8464772898855 is 5588982774648.

8464772898855 is a `hidden beast` number, since 8 + 4 + 6 + 477 + 2 + 8 + 98 + 8 + 55 = 666.

It is not a de Polignac number, because 8464772898855 - 2³ = 8464772898847 is a prime.

It is a super-2 number, since 2×8464772898855² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8464772898859) by changing a digit.

It is a polite number, since it can be written in 511 ways as a sum of consecutive naturals, for example, 2355904939 + ... + 2355908531.

It is an arithmetic number, because the mean of its divisors is an integer number (38201919840).

Almost surely, 2^{8464772898855} is an apocalyptic number.

8464772898855 is an abundant number, since it is smaller than the sum of its proper divisors (11094610059225).

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

8464772898855 is a wasteful number, since it uses less digits than its factorization.

8464772898855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3802 counting only the distinct ones).

The product of its digits is 8670412800, while the sum is 81.

The spelling of 8464772898855 in words is "eight trillion, four hundred sixty-four billion, seven hundred seventy-two million, eight hundred ninety-eight thousand, eight hundred fifty-five".