1472171145681 has 4 divisors (see below), whose sum is σ = 1962894860912. Its totient is φ = 981447430452.

The previous prime is 1472171145671. The next prime is 1472171145719. The reversal of 1472171145681 is 1865411712741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1472171145681 - 2²² = 1472166951377 is a prime.

It is a super-2 number, since 2×1472171145681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1472171145681.

It is not an unprimeable number, because it can be changed into a prime (1472171145631) 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, 245361857611 + ... + 245361857616.

It is an arithmetic number, because the mean of its divisors is an integer number (490723715228).

Almost surely, 2^{1472171145681} is an apocalyptic number.

It is an amenable number.

1472171145681 is a deficient number, since it is larger than the sum of its proper divisors (490723715231).

1472171145681 is an equidigital number, since it uses as much as digits as its factorization.

1472171145681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490723715230.

The product of its digits is 376320, while the sum is 48.

The spelling of 1472171145681 in words is "one trillion, four hundred seventy-two billion, one hundred seventy-one million, one hundred forty-five thousand, six hundred eighty-one".