40656819648 has 28 divisors (see below), whose sum is σ = 107571169160. Its totient is φ = 13552273152.

The previous prime is 40656819629. The next prime is 40656819667. The reversal of 40656819648 is 84691865604.

It is an interprime number because it is at equal distance from previous prime (40656819629) and next prime (40656819667).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 105876943 + ... + 105877326.

It is an arithmetic number, because the mean of its divisors is an integer number (3841827470).

Almost surely, 2^40656819648 is an apocalyptic number.

40656819648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40656819648 is an abundant number, since it is smaller than the sum of its proper divisors (66914349512).

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

40656819648 is a wasteful number, since it uses less digits than its factorization.

40656819648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211754284 (or 211754274 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 57.

The spelling of 40656819648 in words is "forty billion, six hundred fifty-six million, eight hundred nineteen thousand, six hundred forty-eight".