83503040805661 has 8 divisors (see below), whose sum is σ = 85445096948640. Its totient is φ = 81560990342832.

The previous prime is 83503040805659. The next prime is 83503040805707. The reversal of 83503040805661 is 16650804030538.

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 83503040805661 - 2¹ = 83503040805659 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 (83503040805061) 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, 48476355 + ... + 50169343.

It is an arithmetic number, because the mean of its divisors is an integer number (10680637118580).

Almost surely, 2^{83503040805661} is an apocalyptic number.

It is an amenable number.

83503040805661 is a deficient number, since it is larger than the sum of its proper divisors (1942056142979).

83503040805661 is a wasteful number, since it uses less digits than its factorization.

83503040805661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840075.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 83503040805661 in words is "eighty-three trillion, five hundred three billion, forty million, eight hundred five thousand, six hundred sixty-one".