40512066621 has 16 divisors (see below), whose sum is σ = 58182222336. Its totient is φ = 24925766976.

The previous prime is 40512066619. The next prime is 40512066649. The reversal of 40512066621 is 12666021504.

It is not a de Polignac number, because 40512066621 - 2¹ = 40512066619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40512066821) 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 15 ways as a sum of consecutive naturals, for example, 115156 + ... + 307058.

It is an arithmetic number, because the mean of its divisors is an integer number (3636388896).

Almost surely, 2^40512066621 is an apocalyptic number.

It is an amenable number.

40512066621 is a deficient number, since it is larger than the sum of its proper divisors (17670155715).

40512066621 is a wasteful number, since it uses less digits than its factorization.

40512066621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197332.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 40512066621 in words is "forty billion, five hundred twelve million, sixty-six thousand, six hundred twenty-one".