83705953739549 has 2 divisors, whose sum is σ = 83705953739550. Its totient is φ = 83705953739548.

The previous prime is 83705953739501. The next prime is 83705953739657. The reversal of 83705953739549 is 94593735950738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80001522143449 + 3704431596100 = 8944357^2 + 1924690^2 .

It is a cyclic number.

It is not a de Polignac number, because 83705953739549 - 2²⁰ = 83705952690973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83705953739549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83705953730549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41852976869774 + 41852976869775.

It is an arithmetic number, because the mean of its divisors is an integer number (41852976869775).

Almost surely, 2^{83705953739549} is an apocalyptic number.

It is an amenable number.

83705953739549 is a deficient number, since it is larger than the sum of its proper divisors (1).

83705953739549 is an equidigital number, since it uses as much as digits as its factorization.

83705953739549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3857868000, while the sum is 77.

The spelling of 83705953739549 in words is "eighty-three trillion, seven hundred five billion, nine hundred fifty-three million, seven hundred thirty-nine thousand, five hundred forty-nine".