1361260406546 has 4 divisors (see below), whose sum is σ = 2041890609822. Its totient is φ = 680630203272.

The previous prime is 1361260406543. The next prime is 1361260406581. The reversal of 1361260406546 is 6456040621631.

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

It can be written as a sum of positive squares in only one way, i.e., 695787871321 + 665472535225 = 834139^2 + 815765^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1361260406497 and 1361260406506.

It is not an unprimeable number, because it can be changed into a prime (1361260406543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340315101635 + ... + 340315101638.

Almost surely, 2^{1361260406546} is an apocalyptic number.

1361260406546 is a deficient number, since it is larger than the sum of its proper divisors (680630203276).

1361260406546 is an equidigital number, since it uses as much as digits as its factorization.

1361260406546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680630203275.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 1361260406546 in words is "one trillion, three hundred sixty-one billion, two hundred sixty million, four hundred six thousand, five hundred forty-six".