1572871442881 has 4 divisors (see below), whose sum is σ = 1602548262612. Its totient is φ = 1543194623152.

The previous prime is 1572871442873. The next prime is 1572871442893. The reversal of 1572871442881 is 1882441782751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 594879008656 + 977992434225 = 771284^2 + 988935^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572871442881 - 2³ = 1572871442873 is a prime.

It is a super-2 number, since 2×1572871442881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1572871442581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14838409786 + ... + 14838409891.

It is an arithmetic number, because the mean of its divisors is an integer number (400637065653).

Almost surely, 2^{1572871442881} is an apocalyptic number.

It is an amenable number.

1572871442881 is a deficient number, since it is larger than the sum of its proper divisors (29676819731).

1572871442881 is an equidigital number, since it uses as much as digits as its factorization.

1572871442881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29676819730.

The product of its digits is 8028160, while the sum is 58.

The spelling of 1572871442881 in words is "one trillion, five hundred seventy-two billion, eight hundred seventy-one million, four hundred forty-two thousand, eight hundred eighty-one".