8126467720545 has 64 divisors (see below), whose sum is σ = 13123448133120. Its totient is φ = 4293960173568.

The previous prime is 8126467720537. The next prime is 8126467720559. The reversal of 8126467720545 is 5450277646218.

It is not a de Polignac number, because 8126467720545 - 2³ = 8126467720537 is a prime.

It is a super-2 number, since 2×8126467720545² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2310623127 + ... + 2310626643.

It is an arithmetic number, because the mean of its divisors is an integer number (205053877080).

Almost surely, 2^{8126467720545} is an apocalyptic number.

It is an amenable number.

8126467720545 is a deficient number, since it is larger than the sum of its proper divisors (4996980412575).

8126467720545 is a wasteful number, since it uses less digits than its factorization.

8126467720545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6874.

The product of its (nonzero) digits is 22579200, while the sum is 57.

The spelling of 8126467720545 in words is "eight trillion, one hundred twenty-six billion, four hundred sixty-seven million, seven hundred twenty thousand, five hundred forty-five".