40645039932 has 72 divisors (see below), whose sum is σ = 123598966400. Its totient is φ = 11001663648.

The previous prime is 40645039907. The next prime is 40645039933. The reversal of 40645039932 is 23993054604.

40645039932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40645039933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4239682 + ... + 4249257.

Almost surely, 2^40645039932 is an apocalyptic number.

40645039932 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40645039932 is an abundant number, since it is smaller than the sum of its proper divisors (82953926468).

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

40645039932 is a wasteful number, since it uses less digits than its factorization.

40645039932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488975 (or 8488970 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 40645039932 in words is "forty billion, six hundred forty-five million, thirty-nine thousand, nine hundred thirty-two".