1361203425405 has 48 divisors (see below), whose sum is σ = 2384194176000. Its totient is φ = 718391119104.

The previous prime is 1361203425397. The next prime is 1361203425443. The reversal of 1361203425405 is 5045243021631.

1361203425405 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 203 + 42 + 5 + 405 = 666.

It is not a de Polignac number, because 1361203425405 - 2³ = 1361203425397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1361203425405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1269721 + ... + 2081969.

It is an arithmetic number, because the mean of its divisors is an integer number (49670712000).

Almost surely, 2^{1361203425405} is an apocalyptic number.

1361203425405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361203425405 is a deficient number, since it is larger than the sum of its proper divisors (1022990750595).

1361203425405 is a wasteful number, since it uses less digits than its factorization.

1361203425405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812650 (or 812647 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 1361203425405 in words is "one trillion, three hundred sixty-one billion, two hundred three million, four hundred twenty-five thousand, four hundred five".