4157171250457 has 4 divisors (see below), whose sum is σ = 4401710735796. Its totient is φ = 3912631765120.

The previous prime is 4157171250437. The next prime is 4157171250487. The reversal of 4157171250457 is 7540521717514.

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 1448987580121 + 2708183670336 = 1203739^2 + 1645656^2 .

It is a cyclic number.

It is not a de Polignac number, because 4157171250457 - 2⁷ = 4157171250329 is a prime.

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 4157171250457.

It is not an unprimeable number, because it can be changed into a prime (4157171250437) 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, 122269742644 + ... + 122269742677.

It is an arithmetic number, because the mean of its divisors is an integer number (1100427683949).

Almost surely, 2^{4157171250457} is an apocalyptic number.

It is an amenable number.

4157171250457 is a deficient number, since it is larger than the sum of its proper divisors (244539485339).

4157171250457 is a wasteful number, since it uses less digits than its factorization.

4157171250457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244539485338.

The product of its (nonzero) digits is 1372000, while the sum is 49.

The spelling of 4157171250457 in words is "four trillion, one hundred fifty-seven billion, one hundred seventy-one million, two hundred fifty thousand, four hundred fifty-seven".