261322223162 has 64 divisors (see below), whose sum is σ = 526440757248. Its totient is φ = 93956760000.

The previous prime is 261322223137. The next prime is 261322223207.

261322223162 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8455037 + ... + 8485887.

It is an arithmetic number, because the mean of its divisors is an integer number (8225636832).

Almost surely, 2^261322223162 is an apocalyptic number.

261322223162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261322223162 is an abundant number, since it is smaller than the sum of its proper divisors (265118534086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261322223162 is a wasteful number, since it uses less digits than its factorization.

261322223162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35115.

The product of its digits is 20736, while the sum is 32.

It can be divided in two parts, 261322 and 223162, that added together give a palindrome (484484).

The spelling of 261322223162 in words is "two hundred sixty-one billion, three hundred twenty-two million, two hundred twenty-three thousand, one hundred sixty-two".