40464460640 has 48 divisors (see below), whose sum is σ = 96906868128. Its totient is φ = 15964056576.

The previous prime is 40464460639. The next prime is 40464460643. The reversal of 40464460640 is 4606446404.

It is a happy number.

It is a super-2 number, since 2×40464460640² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40464460594 and 40464460603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40464460643) 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, 1720532 + ... + 1743891.

It is an arithmetic number, because the mean of its divisors is an integer number (2018893086).

Almost surely, 2^40464460640 is an apocalyptic number.

40464460640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40464460640 is an abundant number, since it is smaller than the sum of its proper divisors (56442407488).

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

40464460640 is a wasteful number, since it uses less digits than its factorization.

40464460640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464511 (or 3464503 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 40464460640 in words is "forty billion, four hundred sixty-four million, four hundred sixty thousand, six hundred forty".