64245105437 has 4 divisors (see below), whose sum is σ = 65981459676. Its totient is φ = 62508751200.

The previous prime is 64245105383. The next prime is 64245105521. The reversal of 64245105437 is 73450154246.

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 33177165316 + 31067940121 = 182146^2 + 176261^2 .

It is a cyclic number.

It is not a de Polignac number, because 64245105437 - 2⁸ = 64245105181 is a prime.

It is a super-2 number, since 2×64245105437² (a number of 22 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 = 64245105394 and 64245105403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64245104437) 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, 868177064 + ... + 868177137.

It is an arithmetic number, because the mean of its divisors is an integer number (16495364919).

Almost surely, 2^64245105437 is an apocalyptic number.

It is an amenable number.

64245105437 is a deficient number, since it is larger than the sum of its proper divisors (1736354239).

64245105437 is a wasteful number, since it uses less digits than its factorization.

64245105437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736354238.

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 64245105437 in words is "sixty-four billion, two hundred forty-five million, one hundred five thousand, four hundred thirty-seven".