64087550413 has 4 divisors (see below), whose sum is σ = 64306279548. Its totient is φ = 63868821280.

The previous prime is 64087550393. The next prime is 64087550431. The reversal of 64087550413 is 31405578046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31405578046 = 2 ⋅15702789023.

It can be written as a sum of positive squares in 2 ways, for example, as 48014889129 + 16072661284 = 219123^2 + 126778^2 .

It is a cyclic number.

It is not a de Polignac number, because 64087550413 - 2⁹ = 64087549901 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64087550413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64087550213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109364128 + ... + 109364713.

It is an arithmetic number, because the mean of its divisors is an integer number (16076569887).

Almost surely, 2^64087550413 is an apocalyptic number.

It is an amenable number.

64087550413 is a deficient number, since it is larger than the sum of its proper divisors (218729135).

64087550413 is a wasteful number, since it uses less digits than its factorization.

64087550413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218729134.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 64087550413 in words is "sixty-four billion, eighty-seven million, five hundred fifty thousand, four hundred thirteen".