247672726887 has 4 divisors (see below), whose sum is σ = 330230302520. Its totient is φ = 165115151256.

The previous prime is 247672726883. The next prime is 247672726891. The reversal of 247672726887 is 788627276742.

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

It is an interprime number because it is at equal distance from previous prime (247672726883) and next prime (247672726891).

It is not a de Polignac number, because 247672726887 - 2² = 247672726883 is a prime.

It is a super-2 number, since 2×247672726887² (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 (247672726883) 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, 41278787812 + ... + 41278787817.

It is an arithmetic number, because the mean of its divisors is an integer number (82557575630).

Almost surely, 2^247672726887 is an apocalyptic number.

247672726887 is a deficient number, since it is larger than the sum of its proper divisors (82557575633).

247672726887 is an equidigital number, since it uses as much as digits as its factorization.

247672726887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82557575632.

The product of its digits is 177020928, while the sum is 66.

The spelling of 247672726887 in words is "two hundred forty-seven billion, six hundred seventy-two million, seven hundred twenty-six thousand, eight hundred eighty-seven".