67130561572 has 6 divisors (see below), whose sum is σ = 117478482758. Its totient is φ = 33565280784.

The previous prime is 67130561567. The next prime is 67130561621. The reversal of 67130561572 is 27516503176.

It can be written as a sum of positive squares in only one way, i.e., 66097324836 + 1033236736 = 257094^2 + 32144^2 .

It is a super-2 number, since 2×67130561572² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8391320193 + ... + 8391320200.

Almost surely, 2^67130561572 is an apocalyptic number.

It is an amenable number.

67130561572 is a deficient number, since it is larger than the sum of its proper divisors (50347921186).

67130561572 is a wasteful number, since it uses less digits than its factorization.

67130561572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16782640397 (or 16782640395 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 43.

The spelling of 67130561572 in words is "sixty-seven billion, one hundred thirty million, five hundred sixty-one thousand, five hundred seventy-two".