845963574541 has 16 divisors (see below), whose sum is σ = 884384359408. Its totient is φ = 808455168000.

The previous prime is 845963574503. The next prime is 845963574551. The reversal of 845963574541 is 145475369548.

845963574541 = 650370² + 650371².

It can be written as a sum of positive squares in 8 ways, for example, as 422981136900 + 422982437641 = 650370^2 + 650371^2 .

It is a 7-Lehmer number, since φ(845963574541) divides (845963574541-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 845963574541 - 2¹⁷ = 845963443469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 845963574541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845963574551) 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, 1141 + ... + 1300741.

It is an arithmetic number, because the mean of its divisors is an integer number (55274022463).

Almost surely, 2^845963574541 is an apocalyptic number.

845963574541 is the 650371-st centered square number.

It is an amenable number.

845963574541 is a deficient number, since it is larger than the sum of its proper divisors (38420784867).

845963574541 is a wasteful number, since it uses less digits than its factorization.

845963574541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299952.

The product of its digits is 72576000, while the sum is 61.

The spelling of 845963574541 in words is "eight hundred forty-five billion, nine hundred sixty-three million, five hundred seventy-four thousand, five hundred forty-one".