261606121606162 has 8 divisors (see below), whose sum is σ = 393189319950336. Its totient is φ = 130543014956052.

The previous prime is 261606121606147. The next prime is 261606121606213.

261606121606162 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130022922258 + ... + 130022924269.

It is an arithmetic number, because the mean of its divisors is an integer number (49148664993792).

Almost surely, 2^{261606121606162} is an apocalyptic number.

261606121606162 is a deficient number, since it is larger than the sum of its proper divisors (131583198344174).

261606121606162 is a wasteful number, since it uses less digits than its factorization.

261606121606162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260045847032.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 261606121606162 in words is "two hundred sixty-one trillion, six hundred six billion, one hundred twenty-one million, six hundred six thousand, one hundred sixty-two".