1358171113572 has 540 divisors, whose sum is σ = 4694592990780. Its totient is φ = 339327781632.

The previous prime is 1358171113571. The next prime is 1358171113589. The reversal of 1358171113572 is 2753111718531.

It is a happy number.

1358171113572 is a `hidden beast` number, since 1 + 3 + 5 + 8 + 1 + 71 + 1 + 1 + 3 + 572 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 921588480036 + 436582633536 = 959994^2 + 660744^2 .

It is not an unprimeable number, because it can be changed into a prime (1358171113571) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 74496954 + ... + 74515182.

Almost surely, 2^{1358171113572} is an apocalyptic number.

1358171113572 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 1358171113572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2347296495390).

1358171113572 is an abundant number, since it is smaller than the sum of its proper divisors (3336421877208).

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

1358171113572 is a wasteful number, since it uses less digits than its factorization.

1358171113572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310 (or 18273 counting only the distinct ones).

The product of its digits is 176400, while the sum is 45.

The spelling of 1358171113572 in words is "one trillion, three hundred fifty-eight billion, one hundred seventy-one million, one hundred thirteen thousand, five hundred seventy-two".