39456443481 has 16 divisors (see below), whose sum is σ = 64749035904. Its totient is φ = 20812189824.

The previous prime is 39456443449. The next prime is 39456443503. The reversal of 39456443481 is 18434465493.

39456443481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39456443481 - 2⁵ = 39456443449 is a prime.

It is a super-2 number, since 2×39456443481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39456443381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72264276 + ... + 72264821.

It is an arithmetic number, because the mean of its divisors is an integer number (4046814744).

Almost surely, 2^39456443481 is an apocalyptic number.

It is an amenable number.

39456443481 is a deficient number, since it is larger than the sum of its proper divisors (25292592423).

39456443481 is a wasteful number, since it uses less digits than its factorization.

39456443481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144529120.

The product of its digits is 4976640, while the sum is 51.

The spelling of 39456443481 in words is "thirty-nine billion, four hundred fifty-six million, four hundred forty-three thousand, four hundred eighty-one".