61706652568 has 16 divisors (see below), whose sum is σ = 126218153160. Its totient is φ = 28048478400.

The previous prime is 61706652563. The next prime is 61706652577. The reversal of 61706652568 is 86525660716.

It is a super-2 number, since 2×61706652568² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61706652563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350605893 + ... + 350606068.

Almost surely, 2^61706652568 is an apocalyptic number.

It is an amenable number.

61706652568 is an abundant number, since it is smaller than the sum of its proper divisors (64511500592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61706652568 is a wasteful number, since it uses less digits than its factorization.

61706652568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701211978 (or 701211974 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 61706652568 in words is "sixty-one billion, seven hundred six million, six hundred fifty-two thousand, five hundred sixty-eight".