162742247261 has 16 divisors (see below), whose sum is σ = 181047702528. Its totient is φ = 145049127600.

The previous prime is 162742247243. The next prime is 162742247321.

162742247261 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 162742247261 - 2⁶ = 162742247197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162742247201) 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, 560741 + ... + 799946.

It is an arithmetic number, because the mean of its divisors is an integer number (11315481408).

Almost surely, 2^162742247261 is an apocalyptic number.

162742247261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

162742247261 is a deficient number, since it is larger than the sum of its proper divisors (18305455267).

162742247261 is a wasteful number, since it uses less digits than its factorization.

162742247261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360912.

The product of its digits is 451584, while the sum is 44.

The spelling of 162742247261 in words is "one hundred sixty-two billion, seven hundred forty-two million, two hundred forty-seven thousand, two hundred sixty-one".