40928781489 has 16 divisors (see below), whose sum is σ = 54798456960. Its totient is φ = 27172645760.

The previous prime is 40928781479. The next prime is 40928781503. The reversal of 40928781489 is 98418782904.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40928781489 - 2⁴ = 40928781473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40928781419) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1003507 + ... + 1043495.

It is an arithmetic number, because the mean of its divisors is an integer number (3424903560).

Almost surely, 2^40928781489 is an apocalyptic number.

It is an amenable number.

40928781489 is a deficient number, since it is larger than the sum of its proper divisors (13869675471).

40928781489 is a wasteful number, since it uses less digits than its factorization.

40928781489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41400.

The product of its (nonzero) digits is 9289728, while the sum is 60.

The spelling of 40928781489 in words is "forty billion, nine hundred twenty-eight million, seven hundred eighty-one thousand, four hundred eighty-nine".