40751766447 has 48 divisors (see below), whose sum is σ = 66620615040. Its totient is φ = 22032222912.

The previous prime is 40751766439. The next prime is 40751766449. The reversal of 40751766447 is 74466715704.

It is a happy number.

It is not a de Polignac number, because 40751766447 - 2³ = 40751766439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40751766447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40751766449) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2216868 + ... + 2235174.

It is an arithmetic number, because the mean of its divisors is an integer number (1387929480).

Almost surely, 2^40751766447 is an apocalyptic number.

40751766447 is a deficient number, since it is larger than the sum of its proper divisors (25868848593).

40751766447 is a wasteful number, since it uses less digits than its factorization.

40751766447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19140 (or 19133 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 51.

The spelling of 40751766447 in words is "forty billion, seven hundred fifty-one million, seven hundred sixty-six thousand, four hundred forty-seven".