442490400277381 has 4 divisors (see below), whose sum is σ = 442577044183072. Its totient is φ = 442403756371692.

The previous prime is 442490400277379. The next prime is 442490400277439. The reversal of 442490400277381 is 183772004094244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442490400277381 - 2¹ = 442490400277379 is a prime.

It is a super-2 number, since 2×442490400277381² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442490400277181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43321945185 + ... + 43321955398.

It is an arithmetic number, because the mean of its divisors is an integer number (110644261045768).

Almost surely, 2^{442490400277381} is an apocalyptic number.

It is an amenable number.

442490400277381 is a deficient number, since it is larger than the sum of its proper divisors (86643905691).

442490400277381 is an equidigital number, since it uses as much as digits as its factorization.

442490400277381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86643905690.

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 442490400277381 in words is "four hundred forty-two trillion, four hundred ninety billion, four hundred million, two hundred seventy-seven thousand, three hundred eighty-one".