172948720475 has 12 divisors (see below), whose sum is σ = 219687058920. Its totient is φ = 134984366400.

The previous prime is 172948720463. The next prime is 172948720519. The reversal of 172948720475 is 574027849271.

It is not a de Polignac number, because 172948720475 - 2⁴ = 172948720459 is a prime.

It is a super-2 number, since 2×172948720475² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172948720475.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84364205 + ... + 84366254.

It is an arithmetic number, because the mean of its divisors is an integer number (18307254910).

Almost surely, 2^172948720475 is an apocalyptic number.

172948720475 is a deficient number, since it is larger than the sum of its proper divisors (46738338445).

172948720475 is a wasteful number, since it uses less digits than its factorization.

172948720475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168730510 (or 168730505 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 56.

The spelling of 172948720475 in words is "one hundred seventy-two billion, nine hundred forty-eight million, seven hundred twenty thousand, four hundred seventy-five".