172563947548 has 12 divisors (see below), whose sum is σ = 319750844112. Its totient is φ = 81206563520.

The previous prime is 172563947539. The next prime is 172563947561. The reversal of 172563947548 is 845749365271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268852488 + ... + 1268852623.

It is an arithmetic number, because the mean of its divisors is an integer number (26645903676).

Almost surely, 2^172563947548 is an apocalyptic number.

It is an amenable number.

172563947548 is a deficient number, since it is larger than the sum of its proper divisors (147186896564).

172563947548 is a wasteful number, since it uses less digits than its factorization.

172563947548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537705132 (or 2537705130 counting only the distinct ones).

The product of its digits is 50803200, while the sum is 61.

The spelling of 172563947548 in words is "one hundred seventy-two billion, five hundred sixty-three million, nine hundred forty-seven thousand, five hundred forty-eight".