3555548780971 has 4 divisors (see below), whose sum is σ = 3878780488344. Its totient is φ = 3232317073600.

The previous prime is 3555548780939. The next prime is 3555548780989. The reversal of 3555548780971 is 1790878455553.

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

It is a cyclic number.

It is not a de Polignac number, because 3555548780971 - 2⁵ = 3555548780939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3555548780897 and 3555548780906.

It is not an unprimeable number, because it can be changed into a prime (3555548780671) 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, 161615853670 + ... + 161615853691.

It is an arithmetic number, because the mean of its divisors is an integer number (969695122086).

Almost surely, 2^{3555548780971} is an apocalyptic number.

3555548780971 is a deficient number, since it is larger than the sum of its proper divisors (323231707373).

3555548780971 is a wasteful number, since it uses less digits than its factorization.

3555548780971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323231707372.

The product of its (nonzero) digits is 211680000, while the sum is 67.

The spelling of 3555548780971 in words is "three trillion, five hundred fifty-five billion, five hundred forty-eight million, seven hundred eighty thousand, nine hundred seventy-one".