162031721145 has 32 divisors (see below), whose sum is σ = 296302679040. Its totient is φ = 74067618240.

The previous prime is 162031721119. The next prime is 162031721149. The reversal of 162031721145 is 541127130261.

It is not a de Polignac number, because 162031721145 - 2⁷ = 162031721017 is a prime.

It is a super-2 number, since 2×162031721145² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (162031721149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2833890 + ... + 2890500.

It is an arithmetic number, because the mean of its divisors is an integer number (9259458720).

Almost surely, 2^162031721145 is an apocalyptic number.

162031721145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162031721145 is a deficient number, since it is larger than the sum of its proper divisors (134270957895).

162031721145 is a wasteful number, since it uses less digits than its factorization.

162031721145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83885.

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 162031721145 in words is "one hundred sixty-two billion, thirty-one million, seven hundred twenty-one thousand, one hundred forty-five".