67764217321536 has 56 divisors (see below), whose sum is σ = 180480194775744. Its totient is φ = 22438482547200.

The previous prime is 67764217321501. The next prime is 67764217321547. The reversal of 67764217321536 is 63512371246776.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67764217321536.

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, 1168641975 + ... + 1168699958.

Almost surely, 2^{67764217321536} is an apocalyptic number.

It is an amenable number.

67764217321536 is an abundant number, since it is smaller than the sum of its proper divisors (112715977454208).

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

67764217321536 is a wasteful number, since it uses less digits than its factorization.

67764217321536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337342099 (or 2337342089 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 60.

The spelling of 67764217321536 in words is "sixty-seven trillion, seven hundred sixty-four billion, two hundred seventeen million, three hundred twenty-one thousand, five hundred thirty-six".