83780474345 has 8 divisors (see below), whose sum is σ = 101458923720. Its totient is φ = 66409476480.

The previous prime is 83780474341. The next prime is 83780474359. The reversal of 83780474345 is 54347408738.

It can be written as a sum of positive squares in 4 ways, for example, as 4936327081 + 78844147264 = 70259^2 + 280792^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83780474345 - 2² = 83780474341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83780474341) 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, 76862276 + ... + 76863365.

It is an arithmetic number, because the mean of its divisors is an integer number (12682365465).

Almost surely, 2^83780474345 is an apocalyptic number.

It is an amenable number.

83780474345 is a deficient number, since it is larger than the sum of its proper divisors (17678449375).

83780474345 is a wasteful number, since it uses less digits than its factorization.

83780474345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153725755.

The product of its (nonzero) digits is 9031680, while the sum is 53.

The spelling of 83780474345 in words is "eighty-three billion, seven hundred eighty million, four hundred seventy-four thousand, three hundred forty-five".