1247089620960 has 480 divisors, whose sum is σ = 4644862215840. Its totient is φ = 314235998208.

The previous prime is 1247089620937. The next prime is 1247089620961. The reversal of 1247089620960 is 690269807421.

1247089620960 is a `hidden beast` number, since 1 + 2 + 4 + 7 + 0 + 8 + 9 + 620 + 9 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1247089620897 and 1247089620906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247089620961) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 97750902 + ... + 97763658.

It is an arithmetic number, because the mean of its divisors is an integer number (9676796283).

Almost surely, 2^{1247089620960} is an apocalyptic number.

1247089620960 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 1247089620960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2322431107920).

1247089620960 is an abundant number, since it is smaller than the sum of its proper divisors (3397772594880).

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

1247089620960 is a wasteful number, since it uses less digits than its factorization.

1247089620960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13200 (or 13183 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 1247089620960 in words is "one trillion, two hundred forty-seven billion, eighty-nine million, six hundred twenty thousand, nine hundred sixty".