162656431311 has 32 divisors (see below), whose sum is σ = 244872460800. Its totient is φ = 95132535680.

The previous prime is 162656431309. The next prime is 162656431339. The reversal of 162656431311 is 113134656261.

It is a cyclic number.

It is not a de Polignac number, because 162656431311 - 2¹ = 162656431309 is a prime.

It is a super-2 number, since 2×162656431311² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162656431311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162656431361) 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, 1909645 + ... + 1993001.

It is an arithmetic number, because the mean of its divisors is an integer number (7652264400).

Almost surely, 2^162656431311 is an apocalyptic number.

162656431311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

162656431311 is a deficient number, since it is larger than the sum of its proper divisors (82216029489).

162656431311 is a wasteful number, since it uses less digits than its factorization.

162656431311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85439.

The product of its digits is 77760, while the sum is 39.

The spelling of 162656431311 in words is "one hundred sixty-two billion, six hundred fifty-six million, four hundred thirty-one thousand, three hundred eleven".