247794196820 has 48 divisors (see below), whose sum is σ = 532565288640. Its totient is φ = 96795181056.

The previous prime is 247794196799. The next prime is 247794196843. The reversal of 247794196820 is 28691497742.

It is a super-2 number, since 2×247794196820² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 247794196820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5414996 + ... + 5460564.

It is an arithmetic number, because the mean of its divisors is an integer number (11095110180).

Almost surely, 2^247794196820 is an apocalyptic number.

247794196820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247794196820 is an abundant number, since it is smaller than the sum of its proper divisors (284771091820).

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

247794196820 is a wasteful number, since it uses less digits than its factorization.

247794196820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51944 (or 51942 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 247794196820 in words is "two hundred forty-seven billion, seven hundred ninety-four million, one hundred ninety-six thousand, eight hundred twenty".