845581356741 has 32 divisors (see below), whose sum is σ = 1242853516800. Its totient is φ = 507097512000.

The previous prime is 845581356679. The next prime is 845581356749. The reversal of 845581356741 is 147653185548.

It is a happy number.

It is not a de Polignac number, because 845581356741 - 2¹¹ = 845581354693 is a prime.

It is a super-2 number, since 2×845581356741² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845581356749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5588106 + ... + 5737428.

It is an arithmetic number, because the mean of its divisors is an integer number (38839172400).

Almost surely, 2^845581356741 is an apocalyptic number.

It is an amenable number.

845581356741 is a deficient number, since it is larger than the sum of its proper divisors (397272160059).

845581356741 is a wasteful number, since it uses less digits than its factorization.

845581356741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151137.

The product of its digits is 16128000, while the sum is 57.

The spelling of 845581356741 in words is "eight hundred forty-five billion, five hundred eighty-one million, three hundred fifty-six thousand, seven hundred forty-one".