61051666005560 has 64 divisors (see below), whose sum is σ = 147324278541600. Its totient is φ = 22698851774976.

The previous prime is 61051666005559. The next prime is 61051666005571. The reversal of 61051666005560 is 6550066615016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757800659 + ... + 757881218.

Almost surely, 2^{61051666005560} is an apocalyptic number.

It is an amenable number.

61051666005560 is an abundant number, since it is smaller than the sum of its proper divisors (86272612536040).

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

61051666005560 is a wasteful number, since it uses less digits than its factorization.

61051666005560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515681960 (or 1515681956 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 61051666005560 in words is "sixty-one trillion, fifty-one billion, six hundred sixty-six million, five thousand, five hundred sixty".