261646136315033 has 8 divisors (see below), whose sum is σ = 262078473169152. Its totient is φ = 261213803701776.

The previous prime is 261646136314987. The next prime is 261646136315059. The reversal of 261646136315033 is 330513631646162.

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

It is a cyclic number.

It is not a de Polignac number, because 261646136315033 - 2¹⁰ = 261646136314009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261646136315063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137344991 + ... + 139236987.

It is an arithmetic number, because the mean of its divisors is an integer number (32759809146144).

Almost surely, 2^{261646136315033} is an apocalyptic number.

It is an amenable number.

261646136315033 is a deficient number, since it is larger than the sum of its proper divisors (432336854119).

261646136315033 is a wasteful number, since it uses less digits than its factorization.

261646136315033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120431.

The product of its (nonzero) digits is 4199040, while the sum is 50.

The spelling of 261646136315033 in words is "two hundred sixty-one trillion, six hundred forty-six billion, one hundred thirty-six million, three hundred fifteen thousand, thirty-three".