545368957081 has 9 divisors (see below), whose sum is σ = 590557846431. Its totient is φ = 503408636952.

The previous prime is 545368957027. The next prime is 545368957109. The reversal of 545368957081 is 180759863545.

The square root of 545368957081 is 738491.

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

It can be written as a sum of positive squares in only one way, i.e., 80675881225 + 464693075856 = 284035^2 + 681684^2 .

It is not a de Polignac number, because 545368957081 - 2²¹ = 545366859929 is a prime.

It is a super-2 number, since 2×545368957081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545368957481) 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, 9571980 + ... + 9628786.

Almost surely, 2^545368957081 is an apocalyptic number.

545368957081 is the 738491-st square number.

545368957081 is the 369246-th centered octagonal number.

It is an amenable number.

545368957081 is a deficient number, since it is larger than the sum of its proper divisors (45188889350).

545368957081 is an frugal number, since it uses more digits than its factorization.

545368957081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113640 (or 56820 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 61.

The spelling of 545368957081 in words is "five hundred forty-five billion, three hundred sixty-eight million, nine hundred fifty-seven thousand, eighty-one".