83707412678561 has 4 divisors (see below), whose sum is σ = 95665614489792. Its totient is φ = 71749210867332.

The previous prime is 83707412678503. The next prime is 83707412678567. The reversal of 83707412678561 is 16587621470738.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83707412678561 - 2¹⁴ = 83707412662177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83707412678567) 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 3 ways as a sum of consecutive naturals, for example, 5979100905605 + ... + 5979100905618.

It is an arithmetic number, because the mean of its divisors is an integer number (23916403622448).

Almost surely, 2^{83707412678561} is an apocalyptic number.

It is an amenable number.

83707412678561 is a deficient number, since it is larger than the sum of its proper divisors (11958201811231).

83707412678561 is a wasteful number, since it uses less digits than its factorization.

83707412678561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11958201811230.

The product of its (nonzero) digits is 94832640, while the sum is 65.

The spelling of 83707412678561 in words is "eighty-three trillion, seven hundred seven billion, four hundred twelve million, six hundred seventy-eight thousand, five hundred sixty-one".