83146780399 has 2 divisors, whose sum is σ = 83146780400. Its totient is φ = 83146780398.

The previous prime is 83146780331. The next prime is 83146780463. The reversal of 83146780399 is 99308764138.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83146780399 - 2²⁵ = 83113225967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83146750399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41573390199 + 41573390200.

It is an arithmetic number, because the mean of its divisors is an integer number (41573390200).

Almost surely, 2^83146780399 is an apocalyptic number.

83146780399 is a deficient number, since it is larger than the sum of its proper divisors (1).

83146780399 is an equidigital number, since it uses as much as digits as its factorization.

83146780399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 83146780399 in words is "eighty-three billion, one hundred forty-six million, seven hundred eighty thousand, three hundred ninety-nine".