40399737601 has 16 divisors (see below), whose sum is σ = 45216057600. Its totient is φ = 35871268608.

The previous prime is 40399737593. The next prime is 40399737607. The reversal of 40399737601 is 10673799304.

It is a happy number.

It is not a de Polignac number, because 40399737601 - 2³ = 40399737593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40399737607) 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 15 ways as a sum of consecutive naturals, for example, 184470 + ... + 338863.

It is an arithmetic number, because the mean of its divisors is an integer number (2826003600).

Almost surely, 2^40399737601 is an apocalyptic number.

It is an amenable number.

40399737601 is a deficient number, since it is larger than the sum of its proper divisors (4816319999).

40399737601 is a wasteful number, since it uses less digits than its factorization.

40399737601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523608.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 40399737601 in words is "forty billion, three hundred ninety-nine million, seven hundred thirty-seven thousand, six hundred one".