1000247787392 has 128 divisors (see below), whose sum is σ = 2292649920000. Its totient is φ = 425804875776.

The previous prime is 1000247787271. The next prime is 1000247787419. The reversal of 1000247787392 is 2937877420001.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 1000247787392.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116317109 + ... + 116325707.

It is an arithmetic number, because the mean of its divisors is an integer number (17911327500).

Almost surely, 2^{1000247787392} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000247787392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146324960000).

1000247787392 is an abundant number, since it is smaller than the sum of its proper divisors (1292402132608).

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

1000247787392 is an equidigital number, since it uses as much as digits as its factorization.

1000247787392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 50.

The spelling of 1000247787392 in words is "one trillion, two hundred forty-seven million, seven hundred eighty-seven thousand, three hundred ninety-two".