64040103235253 has 4 divisors (see below), whose sum is σ = 64152651747660. Its totient is φ = 63927554722848.

The previous prime is 64040103235151. The next prime is 64040103235279. The reversal of 64040103235253 is 35253230104046.

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 11838567881284 + 52201535353969 = 3440722^2 + 7225063^2 .

It is a cyclic number.

It is not a de Polignac number, because 64040103235253 - 2¹² = 64040103231157 is a prime.

It is a super-2 number, since 2×64040103235253² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64040103234253) 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, 56274255350 + ... + 56274256487.

It is an arithmetic number, because the mean of its divisors is an integer number (16038162936915).

Almost surely, 2^{64040103235253} is an apocalyptic number.

It is an amenable number.

64040103235253 is a deficient number, since it is larger than the sum of its proper divisors (112548512407).

64040103235253 is a wasteful number, since it uses less digits than its factorization.

64040103235253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112548512406.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 64040103235253 its reverse (35253230104046), we get a palindrome (99293333339299).

The spelling of 64040103235253 in words is "sixty-four trillion, forty billion, one hundred three million, two hundred thirty-five thousand, two hundred fifty-three".