45016643531 has 4 divisors (see below), whose sum is σ = 45042772152. Its totient is φ = 44990514912.

The previous prime is 45016643527. The next prime is 45016643563. The reversal of 45016643531 is 13534661054.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13534661054 = 2 ⋅6767330527.

It is a cyclic number.

It is not a de Polignac number, because 45016643531 - 2² = 45016643527 is a prime.

It is a super-2 number, since 2×45016643531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45016643731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13061726 + ... + 13065171.

It is an arithmetic number, because the mean of its divisors is an integer number (11260693038).

Almost surely, 2^45016643531 is an apocalyptic number.

45016643531 is a deficient number, since it is larger than the sum of its proper divisors (26128621).

45016643531 is a wasteful number, since it uses less digits than its factorization.

45016643531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26128620.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 45016643531 in words is "forty-five billion, sixteen million, six hundred forty-three thousand, five hundred thirty-one".