261335533162 has 16 divisors (see below), whose sum is σ = 427648073184. Its totient is φ = 118786626000.

The previous prime is 261335533141. The next prime is 261335533183.

261335533162 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (261335533141) and next prime (261335533183).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782112 + ... + 1923172.

It is an arithmetic number, because the mean of its divisors is an integer number (26728004574).

Almost surely, 2^261335533162 is an apocalyptic number.

261335533162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261335533162 is a deficient number, since it is larger than the sum of its proper divisors (166312540022).

261335533162 is a wasteful number, since it uses less digits than its factorization.

261335533162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225285.

The product of its digits is 291600, while the sum is 40.

It can be divided in two parts, 261335 and 533162, that added together give a palindrome (794497).

The spelling of 261335533162 in words is "two hundred sixty-one billion, three hundred thirty-five million, five hundred thirty-three thousand, one hundred sixty-two".