3670972195661 has 2 divisors, whose sum is σ = 3670972195662. Its totient is φ = 3670972195660.

The previous prime is 3670972195637. The next prime is 3670972195679. The reversal of 3670972195661 is 1665912790763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2431123350436 + 1239848845225 = 1559206^2 + 1113485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3670972195661 is a prime.

It is a super-2 number, since 2×3670972195661² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3670972195594 and 3670972195603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3670972195621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1835486097830 + 1835486097831.

It is an arithmetic number, because the mean of its divisors is an integer number (1835486097831).

Almost surely, 2^{3670972195661} is an apocalyptic number.

It is an amenable number.

3670972195661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3670972195661 is an equidigital number, since it uses as much as digits as its factorization.

3670972195661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25719120, while the sum is 62.

The spelling of 3670972195661 in words is "three trillion, six hundred seventy billion, nine hundred seventy-two million, one hundred ninety-five thousand, six hundred sixty-one".