172239535061 has 8 divisors (see below), whose sum is σ = 187900782048. Its totient is φ = 156578806000.

The previous prime is 172239534989. The next prime is 172239535121. The reversal of 172239535061 is 160535932271.

172239535061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172239535061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172235535061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 977066 + ... + 1139796.

It is an arithmetic number, because the mean of its divisors is an integer number (23487597756).

Almost surely, 2^172239535061 is an apocalyptic number.

172239535061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

172239535061 is a deficient number, since it is larger than the sum of its proper divisors (15661246987).

172239535061 is a wasteful number, since it uses less digits than its factorization.

172239535061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258963.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 172239535061 in words is "one hundred seventy-two billion, two hundred thirty-nine million, five hundred thirty-five thousand, sixty-one".