40684399488 has 96 divisors (see below), whose sum is σ = 117245317800. Its totient is φ = 13541575680.

The previous prime is 40684399391. The next prime is 40684399499. The reversal of 40684399488 is 88499348604.

40684399488 is a `hidden beast` number, since 4 + 0 + 68 + 4 + 3 + 99 + 488 = 666.

40684399488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 770478 + ... + 821586.

Almost surely, 2^40684399488 is an apocalyptic number.

40684399488 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40684399488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58622658900).

40684399488 is an abundant number, since it is smaller than the sum of its proper divisors (76560918312).

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

40684399488 is a wasteful number, since it uses less digits than its factorization.

40684399488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51820 (or 51805 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 63.

The spelling of 40684399488 in words is "forty billion, six hundred eighty-four million, three hundred ninety-nine thousand, four hundred eighty-eight".