1361211561625 has 32 divisors (see below), whose sum is σ = 1829835012096. Its totient is φ = 1008021960000.

The previous prime is 1361211561617. The next prime is 1361211561629. The reversal of 1361211561625 is 5261651121631.

It is not a de Polignac number, because 1361211561625 - 2³ = 1361211561617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1361211561629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7547406 + ... + 7725655.

It is an arithmetic number, because the mean of its divisors is an integer number (57182344128).

Almost surely, 2^{1361211561625} is an apocalyptic number.

It is an amenable number.

1361211561625 is a deficient number, since it is larger than the sum of its proper divisors (468623450471).

1361211561625 is a wasteful number, since it uses less digits than its factorization.

1361211561625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15273130 (or 15273120 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The spelling of 1361211561625 in words is "one trillion, three hundred sixty-one billion, two hundred eleven million, five hundred sixty-one thousand, six hundred twenty-five".