40420460664440 has 32 divisors (see below), whose sum is σ = 91026591102000. Its totient is φ = 16153863446784.

The previous prime is 40420460664439. The next prime is 40420460664509. The reversal of 40420460664440 is 4446606402404.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40420460664391 and 40420460664400.

It is a congruent number.

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, 447479870 + ... + 447570189.

Almost surely, 2^{40420460664440} is an apocalyptic number.

40420460664440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40420460664440 is an abundant number, since it is smaller than the sum of its proper divisors (50606130437560).

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

40420460664440 is a wasteful number, since it uses less digits than its factorization.

40420460664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895051199 (or 895051195 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 44.

The spelling of 40420460664440 in words is "forty trillion, four hundred twenty billion, four hundred sixty million, six hundred sixty-four thousand, four hundred forty".