8117405572 has 6 divisors (see below), whose sum is σ = 14205459758. Its totient is φ = 4058702784.

The previous prime is 8117405567. The next prime is 8117405591. The reversal of 8117405572 is 2755047118.

It can be written as a sum of positive squares in only one way, i.e., 8110083136 + 7322436 = 90056^2 + 2706^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1014675693 + ... + 1014675700.

Almost surely, 2^8117405572 is an apocalyptic number.

It is an amenable number.

8117405572 is a deficient number, since it is larger than the sum of its proper divisors (6088054186).

8117405572 is a wasteful number, since it uses less digits than its factorization.

8117405572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029351397 (or 2029351395 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 8117405572 is about 90096.6457311259. The cubic root of 8117405572 is about 2009.7363227625.

The spelling of 8117405572 in words is "eight billion, one hundred seventeen million, four hundred five thousand, five hundred seventy-two".