40433621457 has 16 divisors (see below), whose sum is σ = 57493437120. Its totient is φ = 25187592192.

The previous prime is 40433621453. The next prime is 40433621471. The reversal of 40433621457 is 75412633404.

It is not a de Polignac number, because 40433621457 - 2² = 40433621453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40433621453) 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, 2844768 + ... + 2858945.

It is an arithmetic number, because the mean of its divisors is an integer number (3593339820).

Almost surely, 2^40433621457 is an apocalyptic number.

It is an amenable number.

40433621457 is a deficient number, since it is larger than the sum of its proper divisors (17059815663).

40433621457 is a wasteful number, since it uses less digits than its factorization.

40433621457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703872.

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 40433621457 in words is "forty billion, four hundred thirty-three million, six hundred twenty-one thousand, four hundred fifty-seven".