64322787934 has 4 divisors (see below), whose sum is σ = 96484181904.
Its totient is φ = 32161393966.
The previous prime is 64322787917. The next prime is 64322787983. The reversal of 64322787934 is 43978722346.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080696982 + ... + 16080696985.
It is an arithmetic number, because the mean of its divisors is an integer number (24121045476).
Almost surely, 264322787934 is an apocalyptic number.
64322787934 is a deficient number, since it is larger than the sum of its proper divisors (32161393970).
64322787934 is a wasteful number, since it uses less digits than its factorization.
64322787934 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32161393969.
The product of its digits is 12192768, while the sum is 55.
The spelling of 64322787934 in words is "sixty-four billion, three hundred twenty-two million, seven hundred eighty-seven thousand, nine hundred thirty-four".