247020814691940 has 24 divisors (see below), whose sum is σ = 691658281137600. Its totient is φ = 65872217251168.

The previous prime is 247020814691909. The next prime is 247020814691951. The reversal of 247020814691940 is 49196418020742.

It is a super-2 number, since 2×247020814691940² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2058506789040 + ... + 2058506789159.

It is an arithmetic number, because the mean of its divisors is an integer number (28819095047400).

Almost surely, 2^{247020814691940} is an apocalyptic number.

247020814691940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

247020814691940 is an abundant number, since it is smaller than the sum of its proper divisors (444637466445660).

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

247020814691940 is a wasteful number, since it uses less digits than its factorization.

247020814691940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4117013578211 (or 4117013578209 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 247020814691940 in words is "two hundred forty-seven trillion, twenty billion, eight hundred fourteen million, six hundred ninety-one thousand, nine hundred forty".