1361443350465 has 64 divisors (see below), whose sum is σ = 2640560025600. Its totient is φ = 660047486400.

The previous prime is 1361443350461. The next prime is 1361443350497. The reversal of 1361443350465 is 5640533441631.

1361443350465 is a `hidden beast` number, since 1 + 36 + 14 + 43 + 3 + 504 + 65 = 666.

It is not a de Polignac number, because 1361443350465 - 2² = 1361443350461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1361443350465.

It is not an unprimeable number, because it can be changed into a prime (1361443350461) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 31744206 + ... + 31787064.

It is an arithmetic number, because the mean of its divisors is an integer number (41258750400).

Almost surely, 2^{1361443350465} is an apocalyptic number.

1361443350465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361443350465 is a deficient number, since it is larger than the sum of its proper divisors (1279116675135).

1361443350465 is a wasteful number, since it uses less digits than its factorization.

1361443350465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64275 (or 64269 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 1361443350465 in words is "one trillion, three hundred sixty-one billion, four hundred forty-three million, three hundred fifty thousand, four hundred sixty-five".