40392321529 has 16 divisors (see below), whose sum is σ = 46863937152. Its totient is φ = 34097424768.

The previous prime is 40392321461. The next prime is 40392321533. The reversal of 40392321529 is 92512329304.

It is a cyclic number.

It is not a de Polignac number, because 40392321529 - 2³¹ = 38244837881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40392321491 and 40392321500.

It is not an unprimeable number, because it can be changed into a prime (40392321569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291147 + ... + 406879.

It is an arithmetic number, because the mean of its divisors is an integer number (2928996072).

Almost surely, 2^40392321529 is an apocalyptic number.

It is an amenable number.

40392321529 is a deficient number, since it is larger than the sum of its proper divisors (6471615623).

40392321529 is a wasteful number, since it uses less digits than its factorization.

40392321529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116496.

The product of its (nonzero) digits is 116640, while the sum is 40.

The spelling of 40392321529 in words is "forty billion, three hundred ninety-two million, three hundred twenty-one thousand, five hundred twenty-nine".