272491293887 has 4 divisors (see below), whose sum is σ = 272618568936. Its totient is φ = 272364018840.

The previous prime is 272491293881. The next prime is 272491293901. The reversal of 272491293887 is 788392194272.

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

It is a cyclic number.

It is not a de Polignac number, because 272491293887 - 2¹⁰ = 272491292863 is a prime.

It is a super-2 number, since 2×272491293887² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272491293881) 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, 63634313 + ... + 63638594.

It is an arithmetic number, because the mean of its divisors is an integer number (68154642234).

Almost surely, 2^272491293887 is an apocalyptic number.

272491293887 is a deficient number, since it is larger than the sum of its proper divisors (127275049).

272491293887 is a wasteful number, since it uses less digits than its factorization.

272491293887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127275048.

The product of its digits is 24385536, while the sum is 62.

The spelling of 272491293887 in words is "two hundred seventy-two billion, four hundred ninety-one million, two hundred ninety-three thousand, eight hundred eighty-seven".