40299632064 has 168 divisors, whose sum is σ = 122514713568. Its totient is φ = 12621496320.

The previous prime is 40299632059. The next prime is 40299632083. The reversal of 40299632064 is 46023699204.

40299632064 is a `hidden beast` number, since 4 + 0 + 2 + 9 + 9 + 632 + 0 + 6 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6332244 + ... + 6338604.

Almost surely, 2^40299632064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40299632064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61257356784).

40299632064 is an abundant number, since it is smaller than the sum of its proper divisors (82215081504).

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

40299632064 is a wasteful number, since it uses less digits than its factorization.

40299632064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7043 (or 7030 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 40299632064 in words is "forty billion, two hundred ninety-nine million, six hundred thirty-two thousand, sixty-four".