247138369908 has 24 divisors (see below), whose sum is σ = 577458241920. Its totient is φ = 82264878720.

The previous prime is 247138369901. The next prime is 247138369909. The reversal of 247138369908 is 809963831742.

It is a super-2 number, since 2×247138369908² (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 (247138369901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14313253 + ... + 14330508.

It is an arithmetic number, because the mean of its divisors is an integer number (24060760080).

Almost surely, 2^247138369908 is an apocalyptic number.

It is an amenable number.

247138369908 is an abundant number, since it is smaller than the sum of its proper divisors (330319872012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247138369908 is a wasteful number, since it uses less digits than its factorization.

247138369908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28644487 (or 28644485 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 247138369908 in words is "two hundred forty-seven billion, one hundred thirty-eight million, three hundred sixty-nine thousand, nine hundred eight".