171438805964 has 12 divisors (see below), whose sum is σ = 300238359288. Its totient is φ = 85656417600.

The previous prime is 171438805949. The next prime is 171438805997. The reversal of 171438805964 is 469508834171.

It is a happy 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, 15740222 + ... + 15751109.

It is an arithmetic number, because the mean of its divisors is an integer number (25019863274).

Almost surely, 2^171438805964 is an apocalyptic number.

It is an amenable number.

171438805964 is a deficient number, since it is larger than the sum of its proper divisors (128799553324).

171438805964 is a wasteful number, since it uses less digits than its factorization.

171438805964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31492696 (or 31492694 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 171438805964 in words is "one hundred seventy-one billion, four hundred thirty-eight million, eight hundred five thousand, nine hundred sixty-four".