67677951399 has 4 divisors (see below), whose sum is σ = 90237268536. Its totient is φ = 45118634264.

The previous prime is 67677951389. The next prime is 67677951401. The reversal of 67677951399 is 99315977676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67677951399 - 2¹² = 67677947303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67677951349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11279658564 + ... + 11279658569.

It is an arithmetic number, because the mean of its divisors is an integer number (22559317134).

Almost surely, 2^67677951399 is an apocalyptic number.

67677951399 is a deficient number, since it is larger than the sum of its proper divisors (22559317137).

67677951399 is a wasteful number, since it uses less digits than its factorization.

67677951399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22559317136.

The product of its digits is 135025380, while the sum is 69.

The spelling of 67677951399 in words is "sixty-seven billion, six hundred seventy-seven million, nine hundred fifty-one thousand, three hundred ninety-nine".