162721247252 has 24 divisors (see below), whose sum is σ = 294905614080. Its totient is φ = 78479599680.

The previous prime is 162721247237. The next prime is 162721247257. The reversal of 162721247252 is 252742127261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162721247257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2099177 + ... + 2175312.

It is an arithmetic number, because the mean of its divisors is an integer number (12287733920).

Almost surely, 2^162721247252 is an apocalyptic number.

It is an amenable number.

162721247252 is a deficient number, since it is larger than the sum of its proper divisors (132184366828).

162721247252 is a wasteful number, since it uses less digits than its factorization.

162721247252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274831 (or 4274829 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The spelling of 162721247252 in words is "one hundred sixty-two billion, seven hundred twenty-one million, two hundred forty-seven thousand, two hundred fifty-two".