64540455404546 has 72 divisors (see below), whose sum is σ = 113797932971940. Its totient is φ = 27337497088000.

The previous prime is 64540455404543. The next prime is 64540455404617.

64540455404546 is nontrivially palindromic in base 10.

64540455404546 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 57867042347521 + 6673413057025 = 7607039^2 + 2583295^2 .

It is a super-2 number, since 2×64540455404546² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64540455404491 and 64540455404500.

It is not an unprimeable number, because it can be changed into a prime (64540455404543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41197970 + ... + 42735858.

Almost surely, 2^{64540455404546} is an apocalyptic number.

64540455404546 is a deficient number, since it is larger than the sum of its proper divisors (49257477567394).

64540455404546 is a wasteful number, since it uses less digits than its factorization.

64540455404546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538132 (or 1538020 counting only the distinct ones).

The product of its (nonzero) digits is 92160000, while the sum is 56.

The spelling of 64540455404546 in words is "sixty-four trillion, five hundred forty billion, four hundred fifty-five million, four hundred four thousand, five hundred forty-six".