167901678897 has 4 divisors (see below), whose sum is σ = 223868905200. Its totient is φ = 111934452596.

The previous prime is 167901678887. The next prime is 167901678913. The reversal of 167901678897 is 798876109761.

167901678897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798876109761 = 3 ⋅266292036587.

It is a cyclic number.

It is not a de Polignac number, because 167901678897 - 2⁸ = 167901678641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (167901678877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27983613147 + ... + 27983613152.

It is an arithmetic number, because the mean of its divisors is an integer number (55967226300).

Almost surely, 2^167901678897 is an apocalyptic number.

It is an amenable number.

167901678897 is a deficient number, since it is larger than the sum of its proper divisors (55967226303).

167901678897 is an equidigital number, since it uses as much as digits as its factorization.

167901678897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55967226302.

The product of its (nonzero) digits is 64012032, while the sum is 69.

The spelling of 167901678897 in words is "one hundred sixty-seven billion, nine hundred one million, six hundred seventy-eight thousand, eight hundred ninety-seven".