7738997040 has 320 divisors, whose sum is σ = 28348185600. Its totient is φ = 1933848576.

The previous prime is 7738997039. The next prime is 7738997081. The reversal of 7738997040 is 407998377.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15385429 + ... + 15385931.

It is an arithmetic number, because the mean of its divisors is an integer number (88588080).

Almost surely, 2^7738997040 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 7738997040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14174092800).

7738997040 is an abundant number, since it is smaller than the sum of its proper divisors (20609188560).

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

7738997040 is a wasteful number, since it uses less digits than its factorization.

7738997040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 7738997040 is about 87971.5694983328. The cubic root of 7738997040 is about 1978.0088339051.

The spelling of 7738997040 in words is "seven billion, seven hundred thirty-eight million, nine hundred ninety-seven thousand, forty".