164612772502 has 4 divisors (see below), whose sum is σ = 246919158756. Its totient is φ = 82306386250.

The previous prime is 164612772491. The next prime is 164612772517. The reversal of 164612772502 is 205277216461.

It is a semiprime because it is the product of two primes.

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, 41153193124 + ... + 41153193127.

It is an arithmetic number, because the mean of its divisors is an integer number (61729789689).

Almost surely, 2^164612772502 is an apocalyptic number.

164612772502 is a deficient number, since it is larger than the sum of its proper divisors (82306386254).

164612772502 is an equidigital number, since it uses as much as digits as its factorization.

164612772502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82306386253.

The product of its (nonzero) digits is 282240, while the sum is 43.

Adding to 164612772502 its reverse (205277216461), we get a palindrome (369889988963).

The spelling of 164612772502 in words is "one hundred sixty-four billion, six hundred twelve million, seven hundred seventy-two thousand, five hundred two".