261005761102 has 16 divisors (see below), whose sum is σ = 400118621760. Its totient is φ = 127636776288.

The previous prime is 261005761091. The next prime is 261005761147. The reversal of 261005761102 is 201167500162.

It is a congruent number.

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, 837213 + ... + 1105864.

It is an arithmetic number, because the mean of its divisors is an integer number (25007413860).

Almost surely, 2^261005761102 is an apocalyptic number.

261005761102 is a deficient number, since it is larger than the sum of its proper divisors (139112860658).

261005761102 is a wasteful number, since it uses less digits than its factorization.

261005761102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944555.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 261005761102 in words is "two hundred sixty-one billion, five million, seven hundred sixty-one thousand, one hundred two".