40988684640 has 96 divisors (see below), whose sum is σ = 129181602816. Its totient is φ = 10924623360.

The previous prime is 40988684621. The next prime is 40988684657. The reversal of 40988684640 is 4648688904.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944049 + ... + 986511.

It is an arithmetic number, because the mean of its divisors is an integer number (1345641696).

Almost surely, 2^40988684640 is an apocalyptic number.

40988684640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40988684640 is an abundant number, since it is smaller than the sum of its proper divisors (88192918176).

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

40988684640 is a wasteful number, since it uses less digits than its factorization.

40988684640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44492 (or 44484 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 57.

The spelling of 40988684640 in words is "forty billion, nine hundred eighty-eight million, six hundred eighty-four thousand, six hundred forty".