247346444980 has 144 divisors (see below), whose sum is σ = 561812041728. Its totient is φ = 91371456000.

The previous prime is 247346444921. The next prime is 247346445023. The reversal of 247346444980 is 89444643742.

It is a super-2 number, since 2×247346444980² (a number of 24 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 47 ways as a sum of consecutive naturals, for example, 249592285 + ... + 249593275.

It is an arithmetic number, because the mean of its divisors is an integer number (3901472512).

Almost surely, 2^247346444980 is an apocalyptic number.

247346444980 is a gapful number since it is divisible by the number (20) 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 247346444980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280906020864).

247346444980 is an abundant number, since it is smaller than the sum of its proper divisors (314465596748).

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

247346444980 is a wasteful number, since it uses less digits than its factorization.

247346444980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 55.

The spelling of 247346444980 in words is "two hundred forty-seven billion, three hundred forty-six million, four hundred forty-four thousand, nine hundred eighty".