40535257321 has 8 divisors (see below), whose sum is σ = 43664513984. Its totient is φ = 37407594960.

The previous prime is 40535257309. The next prime is 40535257327. The reversal of 40535257321 is 12375253504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40535257321 - 2¹¹ = 40535255273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40535257327) 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 7 ways as a sum of consecutive naturals, for example, 345501 + ... + 447706.

It is an arithmetic number, because the mean of its divisors is an integer number (5458064248).

Almost surely, 2^40535257321 is an apocalyptic number.

It is an amenable number.

40535257321 is a deficient number, since it is larger than the sum of its proper divisors (3129256663).

40535257321 is a wasteful number, since it uses less digits than its factorization.

40535257321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797151.

The product of its (nonzero) digits is 126000, while the sum is 37.

The spelling of 40535257321 in words is "forty billion, five hundred thirty-five million, two hundred fifty-seven thousand, three hundred twenty-one".