83687471215321 has 8 divisors (see below), whose sum is σ = 85470255206784. Its totient is φ = 81904778869680.

The previous prime is 83687471215219. The next prime is 83687471215339. The reversal of 83687471215321 is 12351217478638.

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 83687471215321 - 2⁴¹ = 81488447959769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83687471215121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21064110 + ... + 24719863.

It is an arithmetic number, because the mean of its divisors is an integer number (10683781900848).

Almost surely, 2^{83687471215321} is an apocalyptic number.

It is an amenable number.

83687471215321 is a deficient number, since it is larger than the sum of its proper divisors (1782783991463).

83687471215321 is a wasteful number, since it uses less digits than its factorization.

83687471215321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45822911.

The product of its digits is 13547520, while the sum is 58.

The spelling of 83687471215321 in words is "eighty-three trillion, six hundred eighty-seven billion, four hundred seventy-one million, two hundred fifteen thousand, three hundred twenty-one".