745705436549 has 2 divisors, whose sum is σ = 745705436550. Its totient is φ = 745705436548.

The previous prime is 745705436533. The next prime is 745705436551. The reversal of 745705436549 is 945634507547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385877016100 + 359828420449 = 621190^2 + 599857^2 .

It is a cyclic number.

It is not a de Polignac number, because 745705436549 - 2⁴ = 745705436533 is a prime.

Together with 745705436551, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745705436579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372852718274 + 372852718275.

It is an arithmetic number, because the mean of its divisors is an integer number (372852718275).

Almost surely, 2^745705436549 is an apocalyptic number.

It is an amenable number.

745705436549 is a deficient number, since it is larger than the sum of its proper divisors (1).

745705436549 is an equidigital number, since it uses as much as digits as its factorization.

745705436549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504000, while the sum is 59.

The spelling of 745705436549 in words is "seven hundred forty-five billion, seven hundred five million, four hundred thirty-six thousand, five hundred forty-nine".