83719388291 has 12 divisors (see below), whose sum is σ = 105168158256. Its totient is φ = 65235886320.

The previous prime is 83719388287. The next prime is 83719388309. The reversal of 83719388291 is 19288391738.

It is not a de Polignac number, because 83719388291 - 2² = 83719388287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83719388291.

It is not an unprimeable number, because it can be changed into a prime (83719388281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49420280 + ... + 49421973.

It is an arithmetic number, because the mean of its divisors is an integer number (8764013188).

Almost surely, 2^83719388291 is an apocalyptic number.

83719388291 is a deficient number, since it is larger than the sum of its proper divisors (21448769965).

83719388291 is a wasteful number, since it uses less digits than its factorization.

83719388291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98842282 (or 98842271 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 59.

The spelling of 83719388291 in words is "eighty-three billion, seven hundred nineteen million, three hundred eighty-eight thousand, two hundred ninety-one".