61795810568 has 36 divisors (see below), whose sum is σ = 116755854495. Its totient is φ = 30662714320.

The previous prime is 61795810567. The next prime is 61795810633. The reversal of 61795810568 is 86501859716.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 30897905284 + 30897905284 = 175778^2 + 175778^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=175778.

It is a super-2 number, since 2×61795810568² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61795810567) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125856803 + ... + 125857293.

Almost surely, 2^61795810568 is an apocalyptic number.

It is an amenable number.

61795810568 is a deficient number, since it is larger than the sum of its proper divisors (54960043927).

61795810568 is an frugal number, since it uses more digits than its factorization.

61795810568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 56.

The spelling of 61795810568 in words is "sixty-one billion, seven hundred ninety-five million, eight hundred ten thousand, five hundred sixty-eight".