172531166747 has 8 divisors (see below), whose sum is σ = 175113906000. Its totient is φ = 169948652544.

The previous prime is 172531166711. The next prime is 172531166761. The reversal of 172531166747 is 747661135271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172531166747 - 2⁶ = 172531166683 is a prime.

It is a super-2 number, since 2×172531166747² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172531166695 and 172531166704.

It is not an unprimeable number, because it can be changed into a prime (172531166767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2104379 + ... + 2184827.

It is an arithmetic number, because the mean of its divisors is an integer number (21889238250).

Almost surely, 2^172531166747 is an apocalyptic number.

172531166747 is a deficient number, since it is larger than the sum of its proper divisors (2582739253).

172531166747 is an equidigital number, since it uses as much as digits as its factorization.

172531166747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112525.

The product of its digits is 1481760, while the sum is 50.

The spelling of 172531166747 in words is "one hundred seventy-two billion, five hundred thirty-one million, one hundred sixty-six thousand, seven hundred forty-seven".