1247953485240 has 1152 divisors, whose sum is σ = 5300084275200. Its totient is φ = 247355596800.

The previous prime is 1247953485227. The next prime is 1247953485241. The reversal of 1247953485240 is 425843597421.

It is a happy number.

1247953485240 is a `hidden beast` number, since 1 + 2 + 4 + 7 + 9 + 534 + 85 + 24 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247953485241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 2104474384 + ... + 2104474976.

It is an arithmetic number, because the mean of its divisors is an integer number (4600767600).

Almost surely, 2^{1247953485240} is an apocalyptic number.

1247953485240 is a gapful number since it is divisible by the number (10) 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 1247953485240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650042137600).

1247953485240 is an abundant number, since it is smaller than the sum of its proper divisors (4052130789960).

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

1247953485240 is a wasteful number, since it uses less digits than its factorization.

1247953485240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 1247953485240 in words is "one trillion, two hundred forty-seven billion, nine hundred fifty-three million, four hundred eighty-five thousand, two hundred forty".