1247090906880 has 3456 divisors, whose sum is σ = 6171166310400. Its totient is φ = 224737099776.

The previous prime is 1247090906879. The next prime is 1247090906959. The reversal of 1247090906880 is 886090907421.

1247090906880 is a `hidden beast` number, since 1 + 2 + 470 + 9 + 0 + 90 + 6 + 8 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 9819613377 + ... + 9819613503.

It is an arithmetic number, because the mean of its divisors is an integer number (1785638400).

Almost surely, 2^{1247090906880} is an apocalyptic number.

1247090906880 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 1247090906880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3085583155200).

1247090906880 is an abundant number, since it is smaller than the sum of its proper divisors (4924075403520).

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

1247090906880 is a wasteful number, since it uses less digits than its factorization.

1247090906880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 1247090906880 in words is "one trillion, two hundred forty-seven billion, ninety million, nine hundred six thousand, eight hundred eighty".