1247981481308 has 24 divisors (see below), whose sum is σ = 2187703179984. Its totient is φ = 622923724800.

The previous prime is 1247981481293. The next prime is 1247981481319. The reversal of 1247981481308 is 8031841897421.

It is a congruent number.

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, 18968966 + ... + 19034642.

It is an arithmetic number, because the mean of its divisors is an integer number (91154299166).

Almost surely, 2^{1247981481308} is an apocalyptic number.

It is an amenable number.

1247981481308 is a deficient number, since it is larger than the sum of its proper divisors (939721698676).

1247981481308 is a wasteful number, since it uses less digits than its factorization.

1247981481308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73733 (or 73731 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 56.

The spelling of 1247981481308 in words is "one trillion, two hundred forty-seven billion, nine hundred eighty-one million, four hundred eighty-one thousand, three hundred eight".