45238952821 has 4 divisors (see below), whose sum is σ = 45240850144. Its totient is φ = 45237055500.

The previous prime is 45238952819. The next prime is 45238952903. The reversal of 45238952821 is 12825983254.

45238952821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45238952821 - 2¹ = 45238952819 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 (45238952021) 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, 912435 + ... + 960736.

It is an arithmetic number, because the mean of its divisors is an integer number (11310212536).

Almost surely, 2^45238952821 is an apocalyptic number.

It is an amenable number.

45238952821 is a deficient number, since it is larger than the sum of its proper divisors (1897323).

45238952821 is a wasteful number, since it uses less digits than its factorization.

45238952821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897322.

The product of its digits is 1382400, while the sum is 49.

The spelling of 45238952821 in words is "forty-five billion, two hundred thirty-eight million, nine hundred fifty-two thousand, eight hundred twenty-one".