172937299913 has 4 divisors (see below), whose sum is σ = 197642628480. Its totient is φ = 148231971348.

The previous prime is 172937299903. The next prime is 172937299937. The reversal of 172937299913 is 319992739271.

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: 319992739271 = 61 ⋅5245782611.

It is a cyclic number.

It is not a de Polignac number, because 172937299913 - 2⁸ = 172937299657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172937299903) 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, 12352664273 + ... + 12352664286.

It is an arithmetic number, because the mean of its divisors is an integer number (49410657120).

Almost surely, 2^172937299913 is an apocalyptic number.

It is an amenable number.

172937299913 is a deficient number, since it is larger than the sum of its proper divisors (24705328567).

172937299913 is an equidigital number, since it uses as much as digits as its factorization.

172937299913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24705328566.

The product of its digits is 11573604, while the sum is 62.

The spelling of 172937299913 in words is "one hundred seventy-two billion, nine hundred thirty-seven million, two hundred ninety-nine thousand, nine hundred thirteen".