167109256564 has 6 divisors (see below), whose sum is σ = 292441198994. Its totient is φ = 83554628280.

The previous prime is 167109256451. The next prime is 167109256591. The reversal of 167109256564 is 465652901761.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 167101088400 + 8168164 = 408780^2 + 2858^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20888657067 + ... + 20888657074.

Almost surely, 2^167109256564 is an apocalyptic number.

It is an amenable number.

167109256564 is a deficient number, since it is larger than the sum of its proper divisors (125331942430).

167109256564 is a wasteful number, since it uses less digits than its factorization.

167109256564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41777314145 (or 41777314143 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 167109256564 in words is "one hundred sixty-seven billion, one hundred nine million, two hundred fifty-six thousand, five hundred sixty-four".