3522981561761 has 4 divisors (see below), whose sum is σ = 3522999955092. Its totient is φ = 3522963168432.

The previous prime is 3522981561739. The next prime is 3522981561769. The reversal of 3522981561761 is 1671651892253.

3522981561761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1776569094400 + 1746412467361 = 1332880^2 + 1321519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3522981561761 - 2¹⁰ = 3522981560737 is a prime.

It is a super-2 number, since 2×3522981561761² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3522981561697 and 3522981561706.

It is not an unprimeable number, because it can be changed into a prime (3522981561769) 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, 8906306 + ... + 9293451.

It is an arithmetic number, because the mean of its divisors is an integer number (880749988773).

Almost surely, 2^{3522981561761} is an apocalyptic number.

It is an amenable number.

3522981561761 is a deficient number, since it is larger than the sum of its proper divisors (18393331).

3522981561761 is a wasteful number, since it uses less digits than its factorization.

3522981561761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18393330.

The product of its digits is 5443200, while the sum is 56.

The spelling of 3522981561761 in words is "three trillion, five hundred twenty-two billion, nine hundred eighty-one million, five hundred sixty-one thousand, seven hundred sixty-one".