67810825855 has 4 divisors (see below), whose sum is σ = 81372991032. Its totient is φ = 54248660680.

The previous prime is 67810825843. The next prime is 67810825861. The reversal of 67810825855 is 55852801876.

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

It is not a de Polignac number, because 67810825855 - 2¹⁵ = 67810793087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67810825796 and 67810825805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6781082581 + ... + 6781082590.

It is an arithmetic number, because the mean of its divisors is an integer number (20343247758).

Almost surely, 2^67810825855 is an apocalyptic number.

67810825855 is a deficient number, since it is larger than the sum of its proper divisors (13562165177).

67810825855 is a wasteful number, since it uses less digits than its factorization.

67810825855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13562165176.

The product of its (nonzero) digits is 5376000, while the sum is 55.

The spelling of 67810825855 in words is "sixty-seven billion, eight hundred ten million, eight hundred twenty-five thousand, eight hundred fifty-five".