67398689376 has 72 divisors (see below), whose sum is σ = 191690520840. Its totient is φ = 22463241216.

The previous prime is 67398689359. The next prime is 67398689387.

67398689376 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3645211 + ... + 3663653.

It is an arithmetic number, because the mean of its divisors is an integer number (2662368345).

Almost surely, 2^67398689376 is an apocalyptic number.

It is an amenable number.

67398689376 is an abundant number, since it is smaller than the sum of its proper divisors (124291831464).

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

67398689376 is a wasteful number, since it uses less digits than its factorization.

67398689376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31148 (or 31137 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 72.

The spelling of 67398689376 in words is "sixty-seven billion, three hundred ninety-eight million, six hundred eighty-nine thousand, three hundred seventy-six".