38956772440 has 16 divisors (see below), whose sum is σ = 87652738080. Its totient is φ = 15582708960.

The previous prime is 38956772423. The next prime is 38956772443. The reversal of 38956772440 is 4427765983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38956772443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486959616 + ... + 486959695.

It is an arithmetic number, because the mean of its divisors is an integer number (5478296130).

Almost surely, 2^38956772440 is an apocalyptic number.

It is an amenable number.

38956772440 is an abundant number, since it is smaller than the sum of its proper divisors (48695965640).

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

38956772440 is a wasteful number, since it uses less digits than its factorization.

38956772440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973919322 (or 973919318 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 38956772440 in words is "thirty-eight billion, nine hundred fifty-six million, seven hundred seventy-two thousand, four hundred forty".