64234671378 has 16 divisors (see below), whose sum is σ = 129480913920. Its totient is φ = 21242961936.

The previous prime is 64234671329. The next prime is 64234671383. The reversal of 64234671378 is 87317643246.

It is a self number, because there is not a number n which added to its sum of digits gives 64234671378.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42147973 + ... + 42149496.

It is an arithmetic number, because the mean of its divisors is an integer number (8092557120).

Almost surely, 2^64234671378 is an apocalyptic number.

64234671378 is an abundant number, since it is smaller than the sum of its proper divisors (65246242542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64234671378 is a wasteful number, since it uses less digits than its factorization.

64234671378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84297601.

The product of its digits is 4064256, while the sum is 51.

The spelling of 64234671378 in words is "sixty-four billion, two hundred thirty-four million, six hundred seventy-one thousand, three hundred seventy-eight".