540064462081 has 4 divisors (see below), whose sum is σ = 554660798932. Its totient is φ = 525468125232.

The previous prime is 540064462061. The next prime is 540064462111. The reversal of 540064462081 is 180264460045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 370168812225 + 169895649856 = 608415^2 + 412184^2 .

It is a cyclic number.

It is not a de Polignac number, because 540064462081 - 2³³ = 531474527489 is a prime.

It is a super-2 number, since 2×540064462081² (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 (540064462061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7298168370 + ... + 7298168443.

It is an arithmetic number, because the mean of its divisors is an integer number (138665199733).

Almost surely, 2^540064462081 is an apocalyptic number.

It is an amenable number.

540064462081 is a deficient number, since it is larger than the sum of its proper divisors (14596336851).

540064462081 is a wasteful number, since it uses less digits than its factorization.

540064462081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14596336850.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 540064462081 in words is "five hundred forty billion, sixty-four million, four hundred sixty-two thousand, eighty-one".