39545387845 has 8 divisors (see below), whose sum is σ = 50245904664. Its totient is φ = 29775350784.

The previous prime is 39545387831. The next prime is 39545387851. The reversal of 39545387845 is 54878354593.

It is a happy number.

39545387845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6887838049 + 32657549796 = 82993^2 + 180714^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 39545387845 - 2²⁹ = 39008516933 is a prime.

It is a super-2 number, since 2×39545387845² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232619844 + ... + 232620013.

It is an arithmetic number, because the mean of its divisors is an integer number (6280738083).

Almost surely, 2^39545387845 is an apocalyptic number.

It is an amenable number.

39545387845 is a deficient number, since it is larger than the sum of its proper divisors (10700516819).

39545387845 is a wasteful number, since it uses less digits than its factorization.

39545387845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465239879.

The product of its digits is 72576000, while the sum is 61.

The spelling of 39545387845 in words is "thirty-nine billion, five hundred forty-five million, three hundred eighty-seven thousand, eight hundred forty-five".