45021515643 has 24 divisors (see below), whose sum is σ = 70992844832. Its totient is φ = 27326014848.

The previous prime is 45021515641. The next prime is 45021515647. The reversal of 45021515643 is 34651512054.

45021515643 is a `hidden beast` number, since 4 + 5 + 0 + 2 + 1 + 5 + 1 + 5 + 643 = 666.

It is not a de Polignac number, because 45021515643 - 2¹ = 45021515641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45021515598 and 45021515607.

It is not an unprimeable number, because it can be changed into a prime (45021515641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2627071 + ... + 2644152.

Almost surely, 2^45021515643 is an apocalyptic number.

45021515643 is a deficient number, since it is larger than the sum of its proper divisors (25971329189).

45021515643 is a wasteful number, since it uses less digits than its factorization.

45021515643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271315 (or 5271312 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 45021515643 in words is "forty-five billion, twenty-one million, five hundred fifteen thousand, six hundred forty-three".