64670370361 has 4 divisors (see below), whose sum is σ = 68474509812. Its totient is φ = 60866230912.

The previous prime is 64670370341. The next prime is 64670370371. The reversal of 64670370361 is 16307307646.

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 40666755600 + 24003614761 = 201660^2 + 154931^2 .

It is a cyclic number.

It is not a de Polignac number, because 64670370361 - 2¹⁵ = 64670337593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64670370341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1902069700 + ... + 1902069733.

It is an arithmetic number, because the mean of its divisors is an integer number (17118627453).

Almost surely, 2^64670370361 is an apocalyptic number.

It is an amenable number.

64670370361 is a deficient number, since it is larger than the sum of its proper divisors (3804139451).

64670370361 is a wasteful number, since it uses less digits than its factorization.

64670370361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804139450.

The product of its (nonzero) digits is 381024, while the sum is 43.

The spelling of 64670370361 in words is "sixty-four billion, six hundred seventy million, three hundred seventy thousand, three hundred sixty-one".