442680442644 has 24 divisors (see below), whose sum is σ = 1126822945248. Its totient is φ = 134145588640.

The previous prime is 442680442639. The next prime is 442680442651. The reversal of 442680442644 is 446244086244.

It is a junction number, because it is equal to n+sod(n) for n = 442680442593 and 442680442602.

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, 1676819727 + ... + 1676819990.

It is an arithmetic number, because the mean of its divisors is an integer number (46950956052).

Almost surely, 2^442680442644 is an apocalyptic number.

442680442644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

442680442644 is an abundant number, since it is smaller than the sum of its proper divisors (684142502604).

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

442680442644 is a wasteful number, since it uses less digits than its factorization.

442680442644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353639735 (or 3353639733 counting only the distinct ones).

The product of its (nonzero) digits is 4718592, while the sum is 48.

The spelling of 442680442644 in words is "four hundred forty-two billion, six hundred eighty million, four hundred forty-two thousand, six hundred forty-four".