172653521715137 has 4 divisors (see below), whose sum is σ = 172653553260996. Its totient is φ = 172653490169280.

The previous prime is 172653521715119. The next prime is 172653521715263. The reversal of 172653521715137 is 731517125356271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111011489367601 + 61642032347536 = 10536199^2 + 7851244^2 .

It is a cyclic number.

It is not a de Polignac number, because 172653521715137 - 2¹⁶ = 172653521649601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172653521715637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5201564 + ... + 19296717.

It is an arithmetic number, because the mean of its divisors is an integer number (43163388315249).

Almost surely, 2^{172653521715137} is an apocalyptic number.

It is an amenable number.

172653521715137 is a deficient number, since it is larger than the sum of its proper divisors (31545859).

172653521715137 is an equidigital number, since it uses as much as digits as its factorization.

172653521715137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31545858.

The product of its digits is 9261000, while the sum is 56.

The spelling of 172653521715137 in words is "one hundred seventy-two trillion, six hundred fifty-three billion, five hundred twenty-one million, seven hundred fifteen thousand, one hundred thirty-seven".