8157277461 has 32 divisors (see below), whose sum is σ = 11253496320. Its totient is φ = 5252796864.

The previous prime is 8157277459. The next prime is 8157277463. The reversal of 8157277461 is 1647727518.

It is an interprime number because it is at equal distance from previous prime (8157277459) and next prime (8157277463).

It is not a de Polignac number, because 8157277461 - 2¹ = 8157277459 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8157277461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157277463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4772275 + ... + 4773983.

It is an arithmetic number, because the mean of its divisors is an integer number (351671760).

Almost surely, 2^8157277461 is an apocalyptic number.

It is an amenable number.

8157277461 is a deficient number, since it is larger than the sum of its proper divisors (3096218859).

8157277461 is a wasteful number, since it uses less digits than its factorization.

8157277461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2145.

The product of its digits is 658560, while the sum is 48.

The square root of 8157277461 is about 90317.6475612601. The cubic root of 8157277461 is about 2013.0214914704.

The spelling of 8157277461 in words is "eight billion, one hundred fifty-seven million, two hundred seventy-seven thousand, four hundred sixty-one".