247478863464 has 128 divisors (see below), whose sum is σ = 810990796800. Its totient is φ = 68427322560.

The previous prime is 247478863453. The next prime is 247478863487. The reversal of 247478863464 is 464368874742.

247478863464 is a `hidden beast` number, since 2 + 47 + 4 + 78 + 8 + 63 + 464 = 666.

It is a super-2 number, since 2×247478863464² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

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, 2593072 + ... + 2686815.

It is an arithmetic number, because the mean of its divisors is an integer number (6335865600).

Almost surely, 2^247478863464 is an apocalyptic number.

247478863464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

247478863464 is an abundant number, since it is smaller than the sum of its proper divisors (563511933336).

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

247478863464 is a wasteful number, since it uses less digits than its factorization.

247478863464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279940 (or 5279930 counting only the distinct ones).

The product of its digits is 173408256, while the sum is 63.

The spelling of 247478863464 in words is "two hundred forty-seven billion, four hundred seventy-eight million, eight hundred sixty-three thousand, four hundred sixty-four".