3561206077261 has 8 divisors (see below), whose sum is σ = 4070447964864. Its totient is φ = 3052088730240.

The previous prime is 3561206077241. The next prime is 3561206077267. The reversal of 3561206077261 is 1627706021653.

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 3561206077261 - 2¹⁵ = 3561206044493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561206077267) 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, 31073860 + ... + 31188253.

It is an arithmetic number, because the mean of its divisors is an integer number (508805995608).

Almost surely, 2^{3561206077261} is an apocalyptic number.

It is an amenable number.

3561206077261 is a deficient number, since it is larger than the sum of its proper divisors (509241887603).

3561206077261 is an equidigital number, since it uses as much as digits as its factorization.

3561206077261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62270291.

The product of its (nonzero) digits is 635040, while the sum is 46.

The spelling of 3561206077261 in words is "three trillion, five hundred sixty-one billion, two hundred six million, seventy-seven thousand, two hundred sixty-one".