164779656503 has 12 divisors (see below), whose sum is σ = 206995933200. Its totient is φ = 128399731680.

The previous prime is 164779656499. The next prime is 164779656511. The reversal of 164779656503 is 305656977461.

It is not a de Polignac number, because 164779656503 - 2² = 164779656499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164779656203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97271678 + ... + 97273371.

It is an arithmetic number, because the mean of its divisors is an integer number (17249661100).

Almost surely, 2^164779656503 is an apocalyptic number.

164779656503 is a deficient number, since it is larger than the sum of its proper divisors (42216276697).

164779656503 is a wasteful number, since it uses less digits than its factorization.

164779656503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194545078 (or 194545067 counting only the distinct ones).

The product of its (nonzero) digits is 28576800, while the sum is 59.

The spelling of 164779656503 in words is "one hundred sixty-four billion, seven hundred seventy-nine million, six hundred fifty-six thousand, five hundred three".