84427536785 has 8 divisors (see below), whose sum is σ = 101478321960. Its totient is φ = 67431844224.

The previous prime is 84427536779. The next prime is 84427536793. The reversal of 84427536785 is 58763572448.

It can be written as a sum of positive squares in 4 ways, for example, as 10057883521 + 74369653264 = 100289^2 + 272708^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84427536785 - 2²⁴ = 84410759569 is a prime.

It is a super-3 number, since 3×84427536785³ (a number of 34 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13769780 + ... + 13775909.

It is an arithmetic number, because the mean of its divisors is an integer number (12684790245).

Almost surely, 2^84427536785 is an apocalyptic number.

It is an amenable number.

84427536785 is a deficient number, since it is larger than the sum of its proper divisors (17050785175).

84427536785 is a wasteful number, since it uses less digits than its factorization.

84427536785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27546307.

The product of its digits is 45158400, while the sum is 59.

The spelling of 84427536785 in words is "eighty-four billion, four hundred twenty-seven million, five hundred thirty-six thousand, seven hundred eighty-five".