8211132132457 has 4 divisors (see below), whose sum is σ = 8239156474500. Its totient is φ = 8183107790416.

The previous prime is 8211132132409. The next prime is 8211132132487. The reversal of 8211132132457 is 7542312311128.

It is a happy number.

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 6944721760656 + 1266410371801 = 2635284^2 + 1125349^2 .

It is a cyclic number.

It is not a de Polignac number, because 8211132132457 - 2³⁹ = 7661376318569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8211132132487) 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, 14012170582 + ... + 14012171167.

It is an arithmetic number, because the mean of its divisors is an integer number (2059789118625).

Almost surely, 2^{8211132132457} is an apocalyptic number.

It is an amenable number.

8211132132457 is a deficient number, since it is larger than the sum of its proper divisors (28024342043).

8211132132457 is a wasteful number, since it uses less digits than its factorization.

8211132132457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28024342042.

The product of its digits is 80640, while the sum is 40.

The spelling of 8211132132457 in words is "eight trillion, two hundred eleven billion, one hundred thirty-two million, one hundred thirty-two thousand, four hundred fifty-seven".