39971073693 has 32 divisors (see below), whose sum is σ = 58310879616. Its totient is φ = 24252162048.

The previous prime is 39971073691. The next prime is 39971073697. The reversal of 39971073693 is 39637017993.

It is not a de Polignac number, because 39971073693 - 2¹ = 39971073691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39971073691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242605 + ... + 372557.

It is an arithmetic number, because the mean of its divisors is an integer number (1822214988).

Almost surely, 2^39971073693 is an apocalyptic number.

It is an amenable number.

39971073693 is a deficient number, since it is larger than the sum of its proper divisors (18339805923).

39971073693 is a wasteful number, since it uses less digits than its factorization.

39971073693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130173.

The product of its (nonzero) digits is 5786802, while the sum is 57.

The spelling of 39971073693 in words is "thirty-nine billion, nine hundred seventy-one million, seventy-three thousand, six hundred ninety-three".