247074009864 has 128 divisors (see below), whose sum is σ = 714719808000. Its totient is φ = 70388697600.

The previous prime is 247074009857. The next prime is 247074009899. The reversal of 247074009864 is 468900470742.

It is a happy number.

It is a super-2 number, since 2×247074009864² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469092 + ... + 845100.

It is an arithmetic number, because the mean of its divisors is an integer number (5583748500).

Almost surely, 2^247074009864 is an apocalyptic number.

247074009864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247074009864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357359904000).

247074009864 is an abundant number, since it is smaller than the sum of its proper divisors (467645798136).

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

247074009864 is a wasteful number, since it uses less digits than its factorization.

247074009864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376179 (or 376175 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 51.

The spelling of 247074009864 in words is "two hundred forty-seven billion, seventy-four million, nine thousand, eight hundred sixty-four".