2142546395971 has 16 divisors (see below), whose sum is σ = 2169532488960. Its totient is φ = 2115767213280.

The previous prime is 2142546395911. The next prime is 2142546395981. The reversal of 2142546395971 is 1795936452412.

It is a cyclic number.

It is not a de Polignac number, because 2142546395971 - 2²¹ = 2142544298819 is a prime.

It is a super-2 number, since 2×2142546395971² (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 (2142546395911) 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 15 ways as a sum of consecutive naturals, for example, 18269106 + ... + 18386008.

It is an arithmetic number, because the mean of its divisors is an integer number (135595780560).

Almost surely, 2^{2142546395971} is an apocalyptic number.

2142546395971 is a deficient number, since it is larger than the sum of its proper divisors (26986092989).

2142546395971 is a wasteful number, since it uses less digits than its factorization.

2142546395971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117786.

The product of its digits is 16329600, while the sum is 58.

The spelling of 2142546395971 in words is "two trillion, one hundred forty-two billion, five hundred forty-six million, three hundred ninety-five thousand, nine hundred seventy-one".