745936639547 has 16 divisors (see below), whose sum is σ = 814361272800. Its totient is φ = 677614291200.

The previous prime is 745936639537. The next prime is 745936639577.

745936639547 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 745936639547 - 2³⁴ = 728756770363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745936639537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154981313 + ... + 154986125.

It is an arithmetic number, because the mean of its divisors is an integer number (50897579550).

Almost surely, 2^745936639547 is an apocalyptic number.

745936639547 is a deficient number, since it is larger than the sum of its proper divisors (68424633253).

745936639547 is a wasteful number, since it uses less digits than its factorization.

745936639547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12494.

The product of its digits is 514382400, while the sum is 68.

The spelling of 745936639547 in words is "seven hundred forty-five billion, nine hundred thirty-six million, six hundred thirty-nine thousand, five hundred forty-seven".