83720174271 has 24 divisors (see below), whose sum is σ = 119405104896. Its totient is φ = 52145182320.

The previous prime is 83720174201. The next prime is 83720174299. The reversal of 83720174271 is 17247102738.

It is not a de Polignac number, because 83720174271 - 2¹⁹ = 83719649983 is a prime.

It is a super-2 number, since 2×83720174271² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83720174201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545175 + ... + 681656.

It is an arithmetic number, because the mean of its divisors is an integer number (4975212704).

Almost surely, 2^83720174271 is an apocalyptic number.

83720174271 is a deficient number, since it is larger than the sum of its proper divisors (35684930625).

83720174271 is a wasteful number, since it uses less digits than its factorization.

83720174271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226923 (or 1226900 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The spelling of 83720174271 in words is "eighty-three billion, seven hundred twenty million, one hundred seventy-four thousand, two hundred seventy-one".