172998132653 has 4 divisors (see below), whose sum is σ = 173025310080. Its totient is φ = 172970955228.

The previous prime is 172998132649. The next prime is 172998132661. The reversal of 172998132653 is 356231899271.

172998132653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 356231899271 = 617 ⋅577361263.

It is a cyclic number.

It is not a de Polignac number, because 172998132653 - 2² = 172998132649 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 (172998132253) 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 3 ways as a sum of consecutive naturals, for example, 13579163 + ... + 13591896.

It is an arithmetic number, because the mean of its divisors is an integer number (43256327520).

Almost surely, 2^172998132653 is an apocalyptic number.

It is an amenable number.

172998132653 is a deficient number, since it is larger than the sum of its proper divisors (27177427).

172998132653 is an equidigital number, since it uses as much as digits as its factorization.

172998132653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27177426.

The product of its digits is 4898880, while the sum is 56.

The spelling of 172998132653 in words is "one hundred seventy-two billion, nine hundred ninety-eight million, one hundred thirty-two thousand, six hundred fifty-three".