545858630581 has 16 divisors (see below), whose sum is σ = 604247132160. Its totient is φ = 488962519920.

The previous prime is 545858630579. The next prime is 545858630593. The reversal of 545858630581 is 185036858545.

It is a cyclic number.

It is not a de Polignac number, because 545858630581 - 2¹ = 545858630579 is a prime.

It is a super-2 number, since 2×545858630581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545858630521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442725 + ... + 1134778.

It is an arithmetic number, because the mean of its divisors is an integer number (37765445760).

Almost surely, 2^545858630581 is an apocalyptic number.

It is an amenable number.

545858630581 is a deficient number, since it is larger than the sum of its proper divisors (58388501579).

545858630581 is a wasteful number, since it uses less digits than its factorization.

545858630581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577976.

The product of its (nonzero) digits is 23040000, while the sum is 58.

The spelling of 545858630581 in words is "five hundred forty-five billion, eight hundred fifty-eight million, six hundred thirty thousand, five hundred eighty-one".