83420005247 has 8 divisors (see below), whose sum is σ = 83692644000. Its totient is φ = 83147559264.

The previous prime is 83420005231. The next prime is 83420005283. The reversal of 83420005247 is 74250002438.

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 83420005247 - 2⁴ = 83420005231 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 (83420005217) 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, 845654 + ... + 939132.

It is an arithmetic number, because the mean of its divisors is an integer number (10461580500).

Almost surely, 2^83420005247 is an apocalyptic number.

83420005247 is a deficient number, since it is larger than the sum of its proper divisors (272638753).

83420005247 is a wasteful number, since it uses less digits than its factorization.

83420005247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96385.

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 83420005247 in words is "eighty-three billion, four hundred twenty million, five thousand, two hundred forty-seven".