20168547967 has 16 divisors (see below), whose sum is σ = 21016483072. Its totient is φ = 19337045760.

The previous prime is 20168547953. The next prime is 20168547977. The reversal of 20168547967 is 76974586102.

It is a cyclic number.

It is not a de Polignac number, because 20168547967 - 2¹¹ = 20168545919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168547977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3727378 + ... + 3732784.

It is an arithmetic number, because the mean of its divisors is an integer number (1313530192).

Almost surely, 2^20168547967 is an apocalyptic number.

20168547967 is a deficient number, since it is larger than the sum of its proper divisors (847935105).

20168547967 is a wasteful number, since it uses less digits than its factorization.

20168547967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6898.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 20168547967 in words is "twenty billion, one hundred sixty-eight million, five hundred forty-seven thousand, nine hundred sixty-seven".