247908230805 has 16 divisors (see below), whose sum is σ = 396665317440. Its totient is φ = 132213673728.

The previous prime is 247908230803. The next prime is 247908230821. The reversal of 247908230805 is 508032809742.

It is not a de Polignac number, because 247908230805 - 2¹ = 247908230803 is a prime.

It is a super-2 number, since 2×247908230805² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247908230803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290701 + ... + 761789.

It is an arithmetic number, because the mean of its divisors is an integer number (24791582340).

Almost surely, 2^247908230805 is an apocalyptic number.

It is an amenable number.

247908230805 is a deficient number, since it is larger than the sum of its proper divisors (148757086635).

247908230805 is a wasteful number, since it uses less digits than its factorization.

247908230805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506180.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 247908230805 in words is "two hundred forty-seven billion, nine hundred eight million, two hundred thirty thousand, eight hundred five".