64203276243 has 4 divisors (see below), whose sum is σ = 85604368328. Its totient is φ = 42802184160.

The previous prime is 64203276229. The next prime is 64203276289. The reversal of 64203276243 is 34267230246.

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

It is not a de Polignac number, because 64203276243 - 2⁴ = 64203276227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64203276043) 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, 10700546038 + ... + 10700546043.

It is an arithmetic number, because the mean of its divisors is an integer number (21401092082).

Almost surely, 2^64203276243 is an apocalyptic number.

64203276243 is a deficient number, since it is larger than the sum of its proper divisors (21401092085).

64203276243 is a wasteful number, since it uses less digits than its factorization.

64203276243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21401092084.

The product of its (nonzero) digits is 290304, while the sum is 39.

The spelling of 64203276243 in words is "sixty-four billion, two hundred three million, two hundred seventy-six thousand, two hundred forty-three".