86433479578561 has 4 divisors (see below), whose sum is σ = 86434182864324. Its totient is φ = 86432776292800.

The previous prime is 86433479578547. The next prime is 86433479578573. The reversal of 86433479578561 is 16587597433468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14356028434225 + 72077451144336 = 3788935^2 + 8489844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86433479578561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86433479578961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351458500 + ... + 351704341.

It is an arithmetic number, because the mean of its divisors is an integer number (21608545716081).

Almost surely, 2^{86433479578561} is an apocalyptic number.

It is an amenable number.

86433479578561 is a deficient number, since it is larger than the sum of its proper divisors (703285763).

86433479578561 is a wasteful number, since it uses less digits than its factorization.

86433479578561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703285762.

The product of its digits is 3657830400, while the sum is 76.

The spelling of 86433479578561 in words is "eighty-six trillion, four hundred thirty-three billion, four hundred seventy-nine million, five hundred seventy-eight thousand, five hundred sixty-one".