445550432421 has 32 divisors (see below), whose sum is σ = 628635617280. Its totient is φ = 279917164800.

The previous prime is 445550432401. The next prime is 445550432429. The reversal of 445550432421 is 124234055544.

It is not a de Polignac number, because 445550432421 - 2⁷ = 445550432293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445550432421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445550432429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12496606 + ... + 12532208.

It is an arithmetic number, because the mean of its divisors is an integer number (19644863040).

Almost surely, 2^445550432421 is an apocalyptic number.

It is an amenable number.

445550432421 is a deficient number, since it is larger than the sum of its proper divisors (183085184859).

445550432421 is a wasteful number, since it uses less digits than its factorization.

445550432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36777.

The product of its (nonzero) digits is 384000, while the sum is 39.

Adding to 445550432421 its reverse (124234055544), we get a palindrome (569784487965).

The spelling of 445550432421 in words is "four hundred forty-five billion, five hundred fifty million, four hundred thirty-two thousand, four hundred twenty-one".