442102165554451 has 4 divisors (see below), whose sum is σ = 442322007508504. Its totient is φ = 441882323600400.

The previous prime is 442102165554419. The next prime is 442102165554461. The reversal of 442102165554451 is 154455561201244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442102165554451 - 2⁵ = 442102165554419 is a prime.

It is a super-2 number, since 2×442102165554451² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442102165554395 and 442102165554404.

It is not an unprimeable number, because it can be changed into a prime (442102165554461) 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, 109920974010 + ... + 109920978031.

It is an arithmetic number, because the mean of its divisors is an integer number (110580501877126).

Almost surely, 2^{442102165554451} is an apocalyptic number.

442102165554451 is a deficient number, since it is larger than the sum of its proper divisors (219841954053).

442102165554451 is a wasteful number, since it uses less digits than its factorization.

442102165554451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219841954052.

The product of its (nonzero) digits is 3840000, while the sum is 49.

The spelling of 442102165554451 in words is "four hundred forty-two trillion, one hundred two billion, one hundred sixty-five million, five hundred fifty-four thousand, four hundred fifty-one".