424246662640 has 40 divisors (see below), whose sum is σ = 990013295808. Its totient is φ = 169072462080.

The previous prime is 424246662617. The next prime is 424246662641. The reversal of 424246662640 is 46266642424.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×424246662640² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424246662641) 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, 9762607 + ... + 9805966.

Almost surely, 2^424246662640 is an apocalyptic number.

424246662640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424246662640 is an abundant number, since it is smaller than the sum of its proper divisors (565766633168).

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

424246662640 is a wasteful number, since it uses less digits than its factorization.

424246662640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568857 (or 19568851 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 424246662640 in words is "four hundred twenty-four billion, two hundred forty-six million, six hundred sixty-two thousand, six hundred forty".