3484747921661 has 4 divisors (see below), whose sum is σ = 3485065102752. Its totient is φ = 3484430740572.

The previous prime is 3484747921619. The next prime is 3484747921717. The reversal of 3484747921661 is 1661297474843.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3484747921661 - 2⁶ = 3484747921597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3484747921594 and 3484747921603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3484747921261) 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, 158574065 + ... + 158596038.

It is an arithmetic number, because the mean of its divisors is an integer number (871266275688).

Almost surely, 2^{3484747921661} is an apocalyptic number.

It is an amenable number.

3484747921661 is a deficient number, since it is larger than the sum of its proper divisors (317181091).

3484747921661 is a wasteful number, since it uses less digits than its factorization.

3484747921661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317181090.

The product of its digits is 48771072, while the sum is 62.

The spelling of 3484747921661 in words is "three trillion, four hundred eighty-four billion, seven hundred forty-seven million, nine hundred twenty-one thousand, six hundred sixty-one".