247980434808 has 256 divisors, whose sum is σ = 698703667200. Its totient is φ = 73024035840.

The previous prime is 247980434797. The next prime is 247980434809. The reversal of 247980434808 is 808434089742.

It is a happy number.

It is a super-2 number, since 2×247980434808² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247980434809) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37781335 + ... + 37787897.

It is an arithmetic number, because the mean of its divisors is an integer number (2729311200).

Almost surely, 2^247980434808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247980434808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349351833600).

247980434808 is an abundant number, since it is smaller than the sum of its proper divisors (450723232392).

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

247980434808 is a wasteful number, since it uses less digits than its factorization.

247980434808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722 (or 6718 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 247980434808 in words is "two hundred forty-seven billion, nine hundred eighty million, four hundred thirty-four thousand, eight hundred eight".