40615689648 has 40 divisors (see below), whose sum is σ = 104931601408. Its totient is φ = 13537564992.

The previous prime is 40615689637. The next prime is 40615689679. The reversal of 40615689648 is 84698651604.

40615689648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 935265 + ... + 977727.

Almost surely, 2^40615689648 is an apocalyptic number.

40615689648 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40615689648 is an abundant number, since it is smaller than the sum of its proper divisors (64315911760).

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

40615689648 is a wasteful number, since it uses less digits than its factorization.

40615689648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62401 (or 62395 counting only the distinct ones).

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

The spelling of 40615689648 in words is "forty billion, six hundred fifteen million, six hundred eighty-nine thousand, six hundred forty-eight".