40534523521 has 8 divisors (see below), whose sum is σ = 40663278464. Its totient is φ = 40405947120.

The previous prime is 40534523467. The next prime is 40534523569. The reversal of 40534523521 is 12532543504.

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 40534523521 - 2¹⁷ = 40534392449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40534523621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417706 + ... + 505516.

It is an arithmetic number, because the mean of its divisors is an integer number (5082909808).

Almost surely, 2^40534523521 is an apocalyptic number.

It is an amenable number.

40534523521 is a deficient number, since it is larger than the sum of its proper divisors (128754943).

40534523521 is an equidigital number, since it uses as much as digits as its factorization.

40534523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89271.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 40534523521 in words is "forty billion, five hundred thirty-four million, five hundred twenty-three thousand, five hundred twenty-one".