40508654464 has 64 divisors (see below), whose sum is σ = 81077760000. Its totient is φ = 20160005632.

The previous prime is 40508654449. The next prime is 40508654467. The reversal of 40508654464 is 46445680504.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40508654467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36725337 + ... + 36726439.

It is an arithmetic number, because the mean of its divisors is an integer number (1266840000).

Almost surely, 2^40508654464 is an apocalyptic number.

It is an amenable number.

40508654464 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

40508654464 is a wasteful number, since it uses less digits than its factorization.

40508654464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 40508654464 in words is "forty billion, five hundred eight million, six hundred fifty-four thousand, four hundred sixty-four".