64105642355053 has 4 divisors (see below), whose sum is σ = 69036845613148. Its totient is φ = 59174439096960.

The previous prime is 64105642355017. The next prime is 64105642355071. The reversal of 64105642355053 is 35055324650146.

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 33024537903204 + 31081104451849 = 5746698^2 + 5575043^2 .

It is a cyclic number.

It is not a de Polignac number, because 64105642355053 - 2¹⁷ = 64105642223981 is a prime.

It is a super-2 number, since 2×64105642355053² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64105642354988 and 64105642355006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64105642355003) 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, 2465601629028 + ... + 2465601629053.

It is an arithmetic number, because the mean of its divisors is an integer number (17259211403287).

Almost surely, 2^{64105642355053} is an apocalyptic number.

It is an amenable number.

64105642355053 is a deficient number, since it is larger than the sum of its proper divisors (4931203258095).

64105642355053 is a wasteful number, since it uses less digits than its factorization.

64105642355053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4931203258094.

The product of its (nonzero) digits is 6480000, while the sum is 49.

The spelling of 64105642355053 in words is "sixty-four trillion, one hundred five billion, six hundred forty-two million, three hundred fifty-five thousand, fifty-three".