67772197809351 has 24 divisors (see below), whose sum is σ = 111957316342560. Its totient is φ = 38699484696576.

The previous prime is 67772197809343. The next prime is 67772197809361. The reversal of 67772197809351 is 15390879127776.

67772197809351 is a `hidden beast` number, since 6 + 7 + 7 + 7 + 2 + 197 + 80 + 9 + 351 = 666.

It is not a de Polignac number, because 67772197809351 - 2³ = 67772197809343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67772197809351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67772197809361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 381653310 + ... + 381830843.

It is an arithmetic number, because the mean of its divisors is an integer number (4664888180940).

Almost surely, 2^{67772197809351} is an apocalyptic number.

67772197809351 is a deficient number, since it is larger than the sum of its proper divisors (44185118533209).

67772197809351 is a wasteful number, since it uses less digits than its factorization.

67772197809351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763485575 (or 763485572 counting only the distinct ones).

The product of its (nonzero) digits is 280052640, while the sum is 72.

The spelling of 67772197809351 in words is "sixty-seven trillion, seven hundred seventy-two billion, one hundred ninety-seven million, eight hundred nine thousand, three hundred fifty-one".