247097729980 has 24 divisors (see below), whose sum is σ = 520060942800. Its totient is φ = 98618956800.

The previous prime is 247097729971. The next prime is 247097730037. The reversal of 247097729980 is 89927790742.

It is a happy number.

It is a super-2 number, since 2×247097729980² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13749246 + ... + 13767205.

It is an arithmetic number, because the mean of its divisors is an integer number (21669205950).

Almost surely, 2^247097729980 is an apocalyptic number.

247097729980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247097729980 is an abundant number, since it is smaller than the sum of its proper divisors (272963212820).

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

247097729980 is a wasteful number, since it uses less digits than its factorization.

247097729980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27516909 (or 27516907 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 64.

The spelling of 247097729980 in words is "two hundred forty-seven billion, ninety-seven million, seven hundred twenty-nine thousand, nine hundred eighty".