61000665105508 has 24 divisors (see below), whose sum is σ = 107088650663904. Its totient is φ = 30403942800000.

The previous prime is 61000665105467. The next prime is 61000665105521. The reversal of 61000665105508 is 80550156600016.

It is a super-2 number, since 2×61000665105508² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2594883 + ... + 11346133.

It is an arithmetic number, because the mean of its divisors is an integer number (4462027110996).

Almost surely, 2^{61000665105508} is an apocalyptic number.

It is an amenable number.

61000665105508 is a deficient number, since it is larger than the sum of its proper divisors (46087985558396).

61000665105508 is a wasteful number, since it uses less digits than its factorization.

61000665105508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8756763 (or 8756761 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 43.

The spelling of 61000665105508 in words is "sixty-one trillion, six hundred sixty-five million, one hundred five thousand, five hundred eight".