1361215660654 has 4 divisors (see below), whose sum is σ = 2041823490984. Its totient is φ = 680607830326.

The previous prime is 1361215660621. The next prime is 1361215660661. The reversal of 1361215660654 is 4560665121631.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340303915162 + ... + 340303915165.

It is an arithmetic number, because the mean of its divisors is an integer number (510455872746).

Almost surely, 2^{1361215660654} is an apocalyptic number.

1361215660654 is a deficient number, since it is larger than the sum of its proper divisors (680607830330).

1361215660654 is an equidigital number, since it uses as much as digits as its factorization.

1361215660654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680607830329.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 1361215660654 in words is "one trillion, three hundred sixty-one billion, two hundred fifteen million, six hundred sixty thousand, six hundred fifty-four".