40043006464 has 80 divisors (see below), whose sum is σ = 84494234880. Its totient is φ = 18905702400.

The previous prime is 40043006453. The next prime is 40043006477. The reversal of 40043006464 is 46460034004.

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, 3038289 + ... + 3051439.

It is an arithmetic number, because the mean of its divisors is an integer number (1056177936).

Almost surely, 2^40043006464 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 40043006464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42247117440).

40043006464 is an abundant number, since it is smaller than the sum of its proper divisors (44451228416).

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

40043006464 is a wasteful number, since it uses less digits than its factorization.

40043006464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13501 (or 13485 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

The spelling of 40043006464 in words is "forty billion, forty-three million, six thousand, four hundred sixty-four".