10045545421 has 4 divisors (see below), whose sum is σ = 10045785600. Its totient is φ = 10045305244.

The previous prime is 10045545409. The next prime is 10045545427. The reversal of 10045545421 is 12454554001.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12454554001 = 89 ⋅139938809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10045545421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10045545427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39181 + ... + 147058.

It is an arithmetic number, because the mean of its divisors is an integer number (2511446400).

Almost surely, 2^10045545421 is an apocalyptic number.

It is an amenable number.

10045545421 is a deficient number, since it is larger than the sum of its proper divisors (240179).

10045545421 is an equidigital number, since it uses as much as digits as its factorization.

10045545421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240178.

The product of its (nonzero) digits is 16000, while the sum is 31.

The spelling of 10045545421 in words is "ten billion, forty-five million, five hundred forty-five thousand, four hundred twenty-one".