247878411379648 has 28 divisors (see below), whose sum is σ = 562152825808432. Its totient is φ = 106233604876800.

The previous prime is 247878411379583. The next prime is 247878411379667. The reversal of 247878411379648 is 846973114878742.

It is a tau number, because it is divible by the number of its divisors (28).

It is a super-2 number, since 2×247878411379648² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276650012253 + ... + 276650013148.

Almost surely, 2^{247878411379648} is an apocalyptic number.

247878411379648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

247878411379648 is an abundant number, since it is smaller than the sum of its proper divisors (314274414428784).

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

247878411379648 is an equidigital number, since it uses as much as digits as its factorization.

247878411379648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553300025420 (or 553300025410 counting only the distinct ones).

The product of its digits is 3641573376, while the sum is 79.

The spelling of 247878411379648 in words is "two hundred forty-seven trillion, eight hundred seventy-eight billion, four hundred eleven million, three hundred seventy-nine thousand, six hundred forty-eight".