162401655021 has 16 divisors (see below), whose sum is σ = 217376100480. Its totient is φ = 107848186560.

The previous prime is 162401655019. The next prime is 162401655037. The reversal of 162401655021 is 120556104261.

It is not a de Polignac number, because 162401655021 - 2¹ = 162401655019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162401655071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 852351 + ... + 1025331.

It is an arithmetic number, because the mean of its divisors is an integer number (13586006280).

Almost surely, 2^162401655021 is an apocalyptic number.

It is an amenable number.

162401655021 is a deficient number, since it is larger than the sum of its proper divisors (54974445459).

162401655021 is a wasteful number, since it uses less digits than its factorization.

162401655021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174196.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 162401655021 its reverse (120556104261), we get a palindrome (282957759282).

The spelling of 162401655021 in words is "one hundred sixty-two billion, four hundred one million, six hundred fifty-five thousand, twenty-one".