40445553421 has 32 divisors (see below), whose sum is σ = 50625888768. Its totient is φ = 31459415040.

The previous prime is 40445553409. The next prime is 40445553431. The reversal of 40445553421 is 12435554404.

It is a cyclic number.

It is not a de Polignac number, because 40445553421 - 2⁵ = 40445553389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445553431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2056185 + ... + 2075761.

It is an arithmetic number, because the mean of its divisors is an integer number (1582059024).

Almost surely, 2^40445553421 is an apocalyptic number.

It is an amenable number.

40445553421 is a deficient number, since it is larger than the sum of its proper divisors (10180335347).

40445553421 is a wasteful number, since it uses less digits than its factorization.

40445553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19981.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 40445553421 in words is "forty billion, four hundred forty-five million, five hundred fifty-three thousand, four hundred twenty-one".