1371534273666 has 96 divisors (see below), whose sum is σ = 3202192880640. Its totient is φ = 423021772800.

The previous prime is 1371534273649. The next prime is 1371534273691. The reversal of 1371534273666 is 6663724351731.

It is a happy number.

It is a super-2 number, since 2×1371534273666² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33463426 + ... + 33504386.

It is an arithmetic number, because the mean of its divisors is an integer number (33356175840).

Almost surely, 2^{1371534273666} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1371534273666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1601096440320).

1371534273666 is an abundant number, since it is smaller than the sum of its proper divisors (1830658606974).

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

1371534273666 is a wasteful number, since it uses less digits than its factorization.

1371534273666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43632 (or 43629 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 54.

The spelling of 1371534273666 in words is "one trillion, three hundred seventy-one billion, five hundred thirty-four million, two hundred seventy-three thousand, six hundred sixty-six".