1361250661212 has 192 divisors, whose sum is σ = 3972915609600. Its totient is φ = 400203348480.

The previous prime is 1361250661153. The next prime is 1361250661213. The reversal of 1361250661212 is 2121660521631.

1361250661212 is a `hidden beast` number, since 1 + 3 + 6 + 1 + 25 + 0 + 6 + 612 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361250661213) 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, 3240448 + ... + 3636344.

It is an arithmetic number, because the mean of its divisors is an integer number (20692268800).

Almost surely, 2^{1361250661212} is an apocalyptic number.

1361250661212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361250661212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986457804800).

1361250661212 is an abundant number, since it is smaller than the sum of its proper divisors (2611664948388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1361250661212 is a wasteful number, since it uses less digits than its factorization.

1361250661212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396033 (or 396025 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 1361250661212 in words is "one trillion, three hundred sixty-one billion, two hundred fifty million, six hundred sixty-one thousand, two hundred twelve".