64844550023 has 4 divisors (see below), whose sum is σ = 70739509128. Its totient is φ = 58949590920.

The previous prime is 64844549999. The next prime is 64844550041. The reversal of 64844550023 is 32005544846.

64844550023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64844550023 - 2¹⁴ = 64844533639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64841550023) 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, 2947479536 + ... + 2947479557.

It is an arithmetic number, because the mean of its divisors is an integer number (17684877282).

Almost surely, 2^64844550023 is an apocalyptic number.

64844550023 is a deficient number, since it is larger than the sum of its proper divisors (5894959105).

64844550023 is a wasteful number, since it uses less digits than its factorization.

64844550023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5894959104.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 64844550023 in words is "sixty-four billion, eight hundred forty-four million, five hundred fifty thousand, twenty-three".