272171720051 has 20 divisors (see below), whose sum is σ = 346379794104. Its totient is φ = 212081839200.

The previous prime is 272171720047. The next prime is 272171720053. The reversal of 272171720051 is 150027171272.

It is not a de Polignac number, because 272171720051 - 2² = 272171720047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 272171719993 and 272171720020.

It is not an unprimeable number, because it can be changed into a prime (272171720053) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5126210 + ... + 5179031.

Almost surely, 2^272171720051 is an apocalyptic number.

272171720051 is a deficient number, since it is larger than the sum of its proper divisors (74208074053).

272171720051 is an equidigital number, since it uses as much as digits as its factorization.

272171720051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10305280 (or 10305259 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 35.

The spelling of 272171720051 in words is "two hundred seventy-two billion, one hundred seventy-one million, seven hundred twenty thousand, fifty-one".