84477367122561 has 12 divisors (see below), whose sum is σ = 139454701281792. Its totient is φ = 48272781212856.

The previous prime is 84477367122559. The next prime is 84477367122581. The reversal of 84477367122561 is 16522176377448.

84477367122561 is a `hidden beast` number, since 8 + 4 + 4 + 7 + 7 + 3 + 67 + 1 + 2 + 2 + 561 = 666.

It is not a de Polignac number, because 84477367122561 - 2¹ = 84477367122559 is a prime.

It is a super-3 number, since 3×84477367122561³ (a number of 43 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1340910589247 = 84477367122561 / (8 + 4 + 4 + 7 + 7 + 3 + 6 + 7 + 1 + 2 + 2 + 5 + 6 + 1).

It is not an unprimeable number, because it can be changed into a prime (84477367122581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 670455294561 + ... + 670455294686.

It is an arithmetic number, because the mean of its divisors is an integer number (11621225106816).

Almost surely, 2^{84477367122561} is an apocalyptic number.

It is an amenable number.

84477367122561 is a deficient number, since it is larger than the sum of its proper divisors (54977334159231).

84477367122561 is a wasteful number, since it uses less digits than its factorization.

84477367122561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340910589260 (or 1340910589257 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 63.

The spelling of 84477367122561 in words is "eighty-four trillion, four hundred seventy-seven billion, three hundred sixty-seven million, one hundred twenty-two thousand, five hundred sixty-one".