40520621443632 has 80 divisors (see below), whose sum is σ = 114465725034240. Its totient is φ = 12249809913600.

The previous prime is 40520621443597. The next prime is 40520621443637. The reversal of 40520621443632 is 23634412602504.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40520621443637) 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, 90922132 + ... + 91366707.

It is an arithmetic number, because the mean of its divisors is an integer number (1430821562928).

Almost surely, 2^{40520621443632} is an apocalyptic number.

It is an amenable number.

40520621443632 is an abundant number, since it is smaller than the sum of its proper divisors (73945103590608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40520621443632 is a wasteful number, since it uses less digits than its factorization.

40520621443632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182289282 (or 182289276 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 40520621443632 in words is "forty trillion, five hundred twenty billion, six hundred twenty-one million, four hundred forty-three thousand, six hundred thirty-two".