3557006077661 has 4 divisors (see below), whose sum is σ = 3560213478300. Its totient is φ = 3553798677024.

The previous prime is 3557006077643. The next prime is 3557006077663. The reversal of 3557006077661 is 1667706007553.

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 345061081561 + 3211944996100 = 587419^2 + 1792190^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3557006077661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3557006077663) 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, 1603698656 + ... + 1603700873.

It is an arithmetic number, because the mean of its divisors is an integer number (890053369575).

Almost surely, 2^{3557006077661} is an apocalyptic number.

It is an amenable number.

3557006077661 is a deficient number, since it is larger than the sum of its proper divisors (3207400639).

3557006077661 is a wasteful number, since it uses less digits than its factorization.

3557006077661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207400638.

The product of its (nonzero) digits is 5556600, while the sum is 53.

The spelling of 3557006077661 in words is "three trillion, five hundred fifty-seven billion, six million, seventy-seven thousand, six hundred sixty-one".