172952389561 has 8 divisors (see below), whose sum is σ = 197668227584. Its totient is φ = 148238640000.

The previous prime is 172952389469. The next prime is 172952389567. The reversal of 172952389561 is 165983259271.

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 172952389561 - 2⁷ = 172952389433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172952389496 and 172952389505.

It is not an unprimeable number, because it can be changed into a prime (172952389567) 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, 340440 + ... + 679561.

It is an arithmetic number, because the mean of its divisors is an integer number (24708528448).

Almost surely, 2^172952389561 is an apocalyptic number.

It is an amenable number.

172952389561 is a deficient number, since it is larger than the sum of its proper divisors (24715838023).

172952389561 is a wasteful number, since it uses less digits than its factorization.

172952389561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044231.

The product of its digits is 8164800, while the sum is 58.

The spelling of 172952389561 in words is "one hundred seventy-two billion, nine hundred fifty-two million, three hundred eighty-nine thousand, five hundred sixty-one".