1361286950400 has 1920 divisors, whose sum is σ = 5830726809600. Its totient is φ = 308153548800.

The previous prime is 1361286950389. The next prime is 1361286950447. The reversal of 1361286950400 is 40596821631.

1361286950400 is a `hidden beast` number, since 1 + 3 + 61 + 2 + 86 + 9 + 504 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a super-2 number, since 2×1361286950400² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3158438185 + ... + 3158438615.

It is an arithmetic number, because the mean of its divisors is an integer number (3036836880).

Almost surely, 2^{1361286950400} is an apocalyptic number.

1361286950400 is a gapful number since it is divisible by the number (10) 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 1361286950400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2915363404800).

1361286950400 is an abundant number, since it is smaller than the sum of its proper divisors (4469439859200).

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

1361286950400 is a wasteful number, since it uses less digits than its factorization.

1361286950400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 1361286950400 in words is "one trillion, three hundred sixty-one billion, two hundred eighty-six million, nine hundred fifty thousand, four hundred".