64672704541 has 4 divisors (see below), whose sum is σ = 64858013500. Its totient is φ = 64487395584.

The previous prime is 64672704539. The next prime is 64672704557. The reversal of 64672704541 is 14540727646.

64672704541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 21244228516 + 43428476025 = 145754^2 + 208395^2 .

It is a cyclic number.

It is not a de Polignac number, because 64672704541 - 2¹ = 64672704539 is a prime.

It is a super-3 number, since 3×64672704541³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64672704491 and 64672704500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64672704571) 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, 92653956 + ... + 92654653.

It is an arithmetic number, because the mean of its divisors is an integer number (16214503375).

Almost surely, 2^64672704541 is an apocalyptic number.

It is an amenable number.

64672704541 is a deficient number, since it is larger than the sum of its proper divisors (185308959).

64672704541 is a wasteful number, since it uses less digits than its factorization.

64672704541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185308958.

The product of its (nonzero) digits is 1128960, while the sum is 46.

The spelling of 64672704541 in words is "sixty-four billion, six hundred seventy-two million, seven hundred four thousand, five hundred forty-one".