45616843561 has 9 divisors (see below), whose sum is σ = 46711775901. Its totient is φ = 44547016332.

The previous prime is 45616843397. The next prime is 45616843579. The reversal of 45616843561 is 16534861654.

The square root of 45616843561 is 213581.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 45616843561 - 2²³ = 45608454953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45616843061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9181500 + ... + 9186466.

Almost surely, 2^45616843561 is an apocalyptic number.

45616843561 is the 213581-st square number.

45616843561 is the 106791-st centered octagonal number.

It is an amenable number.

45616843561 is a deficient number, since it is larger than the sum of its proper divisors (1094932340).

45616843561 is an frugal number, since it uses more digits than its factorization.

45616843561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10020 (or 5010 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

Multiplying 45616843561 by its sum of digits (49), we get a square (2235225334489 = 1495067²).

The spelling of 45616843561 in words is "forty-five billion, six hundred sixteen million, eight hundred forty-three thousand, five hundred sixty-one".