84275561511 has 20 divisors (see below), whose sum is σ = 132519079000. Its totient is φ = 53226669456.

The previous prime is 84275561479. The next prime is 84275561569. The reversal of 84275561511 is 11516557248.

84275561511 is a `hidden beast` number, since 8 + 4 + 2 + 75 + 5 + 61 + 511 = 666.

It is not a de Polignac number, because 84275561511 - 2⁵ = 84275561479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84275561581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27378436 + ... + 27381513.

It is an arithmetic number, because the mean of its divisors is an integer number (6625953950).

Almost surely, 2^84275561511 is an apocalyptic number.

84275561511 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84275561511 is a deficient number, since it is larger than the sum of its proper divisors (48243517489).

84275561511 is a wasteful number, since it uses less digits than its factorization.

84275561511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54759980 (or 54759971 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The spelling of 84275561511 in words is "eighty-four billion, two hundred seventy-five million, five hundred sixty-one thousand, five hundred eleven".