3676081511561 has 4 divisors (see below), whose sum is σ = 3676086738324. Its totient is φ = 3676076284800.

The previous prime is 3676081511537. The next prime is 3676081511569. The reversal of 3676081511561 is 1651151806763.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1479461101561 + 2196620410000 = 1216331^2 + 1482100^2 .

It is a cyclic number.

It is not a de Polignac number, because 3676081511561 - 2⁶ = 3676081511497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3676081511569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357100 + ... + 3032141.

It is an arithmetic number, because the mean of its divisors is an integer number (919021684581).

Almost surely, 2^{3676081511561} is an apocalyptic number.

It is an amenable number.

3676081511561 is a deficient number, since it is larger than the sum of its proper divisors (5226763).

3676081511561 is an equidigital number, since it uses as much as digits as its factorization.

3676081511561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226762.

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 3676081511561 in words is "three trillion, six hundred seventy-six billion, eighty-one million, five hundred eleven thousand, five hundred sixty-one".