40054257521 has 8 divisors (see below), whose sum is σ = 40367631744. Its totient is φ = 39740998960.

The previous prime is 40054257499. The next prime is 40054257563. The reversal of 40054257521 is 12575245004.

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 40054257521 - 2⁶ = 40054257457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40054257721) 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, 747395 + ... + 799191.

It is an arithmetic number, because the mean of its divisors is an integer number (5045953968).

Almost surely, 2^40054257521 is an apocalyptic number.

It is an amenable number.

40054257521 is a deficient number, since it is larger than the sum of its proper divisors (313374223).

40054257521 is a wasteful number, since it uses less digits than its factorization.

40054257521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57831.

The product of its (nonzero) digits is 56000, while the sum is 35.

The spelling of 40054257521 in words is "forty billion, fifty-four million, two hundred fifty-seven thousand, five hundred twenty-one".