442432052251 has 16 divisors (see below), whose sum is σ = 510595778304. Its totient is φ = 375511358304.

The previous prime is 442432052213. The next prime is 442432052267. The reversal of 442432052251 is 152250234244.

It is a cyclic number.

It is not a de Polignac number, because 442432052251 - 2¹⁵ = 442432019483 is a prime.

It is a super-2 number, since 2×442432052251² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442432052201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1515981 + ... + 1784113.

It is an arithmetic number, because the mean of its divisors is an integer number (31912236144).

Almost surely, 2^442432052251 is an apocalyptic number.

442432052251 is a deficient number, since it is larger than the sum of its proper divisors (68163726053).

442432052251 is a wasteful number, since it uses less digits than its factorization.

442432052251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270450.

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 442432052251 its reverse (152250234244), we get a palindrome (594682286495).

The spelling of 442432052251 in words is "four hundred forty-two billion, four hundred thirty-two million, fifty-two thousand, two hundred fifty-one".