64377329918 has 32 divisors (see below), whose sum is σ = 110999808000. Its totient is φ = 27694638720.

The previous prime is 64377329911. The next prime is 64377330019. The reversal of 64377329918 is 81992377346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64377329911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345443 + ... + 498081.

It is an arithmetic number, because the mean of its divisors is an integer number (3468744000).

Almost surely, 2^64377329918 is an apocalyptic number.

64377329918 is a deficient number, since it is larger than the sum of its proper divisors (46622478082).

64377329918 is a wasteful number, since it uses less digits than its factorization.

64377329918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153680.

The product of its digits is 13716864, while the sum is 59.

The spelling of 64377329918 in words is "sixty-four billion, three hundred seventy-seven million, three hundred twenty-nine thousand, nine hundred eighteen".