1247888103408 has 400 divisors, whose sum is σ = 3982373683200. Its totient is φ = 375489354240.

The previous prime is 1247888103347. The next prime is 1247888103491. The reversal of 1247888103408 is 8043018887421.

1247888103408 is a `hidden beast` number, since 12 + 47 + 8 + 88 + 103 + 408 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 152344593 + ... + 152352783.

It is an arithmetic number, because the mean of its divisors is an integer number (9955934208).

Almost surely, 2^{1247888103408} is an apocalyptic number.

1247888103408 is a gapful number since it is divisible by the number (18) 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 1247888103408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991186841600).

1247888103408 is an abundant number, since it is smaller than the sum of its proper divisors (2734485579792).

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

1247888103408 is a wasteful number, since it uses less digits than its factorization.

1247888103408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8522 (or 8507 counting only the distinct ones).

The product of its (nonzero) digits is 2752512, while the sum is 54.

The spelling of 1247888103408 in words is "one trillion, two hundred forty-seven billion, eight hundred eighty-eight million, one hundred three thousand, four hundred eight".