64452135243 has 4 divisors (see below), whose sum is σ = 85936180328. Its totient is φ = 42968090160.

The previous prime is 64452135233. The next prime is 64452135271. The reversal of 64452135243 is 34253125446.

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

It is not a de Polignac number, because 64452135243 - 2⁵ = 64452135211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64452135233) 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, 10742022538 + ... + 10742022543.

It is an arithmetic number, because the mean of its divisors is an integer number (21484045082).

Almost surely, 2^64452135243 is an apocalyptic number.

64452135243 is a deficient number, since it is larger than the sum of its proper divisors (21484045085).

64452135243 is a wasteful number, since it uses less digits than its factorization.

64452135243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21484045084.

The product of its digits is 345600, while the sum is 39.

The spelling of 64452135243 in words is "sixty-four billion, four hundred fifty-two million, one hundred thirty-five thousand, two hundred forty-three".