45405528821 has 4 divisors (see below), whose sum is σ = 47379682272. Its totient is φ = 43431375372.

The previous prime is 45405528811. The next prime is 45405528827. The reversal of 45405528821 is 12882550454.

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: 12882550454 = 2 ⋅6441275227.

It is a cyclic number.

It is not a de Polignac number, because 45405528821 - 2¹⁸ = 45405266677 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 (45405528827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987076691 + ... + 987076736.

It is an arithmetic number, because the mean of its divisors is an integer number (11844920568).

Almost surely, 2^45405528821 is an apocalyptic number.

It is an amenable number.

45405528821 is a deficient number, since it is larger than the sum of its proper divisors (1974153451).

45405528821 is a wasteful number, since it uses less digits than its factorization.

45405528821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1974153450.

The product of its (nonzero) digits is 512000, while the sum is 44.

The spelling of 45405528821 in words is "forty-five billion, four hundred five million, five hundred twenty-eight thousand, eight hundred twenty-one".