162577677661 has 6 divisors (see below), whose sum is σ = 189120972030. Its totient is φ = 139352295096.

The previous prime is 162577677607. The next prime is 162577677671. The reversal of 162577677661 is 166776775261.

It can be written as a sum of positive squares in only one way, i.e., 99812396761 + 62765280900 = 315931^2 + 250530^2 .

It is not a de Polignac number, because 162577677661 - 2¹³ = 162577669469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162577677661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162577677671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1658955846 + ... + 1658955943.

It is an arithmetic number, because the mean of its divisors is an integer number (31520162005).

Almost surely, 2^162577677661 is an apocalyptic number.

It is an amenable number.

162577677661 is a deficient number, since it is larger than the sum of its proper divisors (26543294369).

162577677661 is an equidigital number, since it uses as much as digits as its factorization.

162577677661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317911803 (or 3317911796 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 61.

The spelling of 162577677661 in words is "one hundred sixty-two billion, five hundred seventy-seven million, six hundred seventy-seven thousand, six hundred sixty-one".