247391081052 has 48 divisors (see below), whose sum is σ = 589749864480. Its totient is φ = 80696512512.

The previous prime is 247391081051. The next prime is 247391081059. The reversal of 247391081052 is 250180193742.

It is a super-2 number, since 2×247391081052² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247391080995 and 247391081013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247391081051) 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, 1090423 + ... + 1297614.

It is an arithmetic number, because the mean of its divisors is an integer number (12286455510).

Almost surely, 2^247391081052 is an apocalyptic number.

It is an amenable number.

247391081052 is an abundant number, since it is smaller than the sum of its proper divisors (342358783428).

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

247391081052 is a wasteful number, since it uses less digits than its factorization.

247391081052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388230 (or 2388228 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 247391081052 in words is "two hundred forty-seven billion, three hundred ninety-one million, eighty-one thousand, fifty-two".