8127346521 has 8 divisors (see below), whose sum is σ = 12384528064. Its totient is φ = 4644198000.

The previous prime is 8127346459. The next prime is 8127346547. The reversal of 8127346521 is 1256437218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8127346521 - 2⁷ = 8127346393 is a prime.

It is a super-2 number, since 2×8127346521² (a number of 21 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 8127346521.

It is not an unprimeable number, because it can be changed into a prime (8127346561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193508230 + ... + 193508271.

It is an arithmetic number, because the mean of its divisors is an integer number (1548066008).

Almost surely, 2^8127346521 is an apocalyptic number.

It is an amenable number.

8127346521 is a deficient number, since it is larger than the sum of its proper divisors (4257181543).

8127346521 is a wasteful number, since it uses less digits than its factorization.

8127346521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387016511.

The product of its digits is 80640, while the sum is 39.

The square root of 8127346521 is about 90151.7971035520. The cubic root of 8127346521 is about 2010.5563933318.

The spelling of 8127346521 in words is "eight billion, one hundred twenty-seven million, three hundred forty-six thousand, five hundred twenty-one".