13171977973 has 48 divisors (see below), whose sum is σ = 17395378560. Its totient is φ = 9850646400.

The previous prime is 13171977953. The next prime is 13171977983. The reversal of 13171977973 is 37977917131.

It is a happy number.

It is not a de Polignac number, because 13171977973 - 2⁵ = 13171977941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13171977913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2701728 + ... + 2706598.

It is an arithmetic number, because the mean of its divisors is an integer number (362403720).

Almost surely, 2^13171977973 is an apocalyptic number.

It is an amenable number.

13171977973 is a deficient number, since it is larger than the sum of its proper divisors (4223400587).

13171977973 is a wasteful number, since it uses less digits than its factorization.

13171977973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5098 (or 5091 counting only the distinct ones).

The product of its digits is 1750329, while the sum is 55.

The spelling of 13171977973 in words is "thirteen billion, one hundred seventy-one million, nine hundred seventy-seven thousand, nine hundred seventy-three".