9778269744 has 240 divisors, whose sum is σ = 30013183200. Its totient is φ = 2961100800.

The previous prime is 9778269737. The next prime is 9778269799. The reversal of 9778269744 is 4479628779.

It is a super-2 number, since 2×9778269744² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6842022 + ... + 6843450.

It is an arithmetic number, because the mean of its divisors is an integer number (125054930).

Almost surely, 2^9778269744 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 9778269744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15006591600).

9778269744 is an abundant number, since it is smaller than the sum of its proper divisors (20234913456).

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

9778269744 is a wasteful number, since it uses less digits than its factorization.

9778269744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564 (or 1555 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The square root of 9778269744 is about 98885.1340900138. The cubic root of 9778269744 is about 2138.3920829991.

The spelling of 9778269744 in words is "nine billion, seven hundred seventy-eight million, two hundred sixty-nine thousand, seven hundred forty-four".