61266915016 has 64 divisors (see below), whose sum is σ = 121605788160. Its totient is φ = 28903392000.

The previous prime is 61266914981. The next prime is 61266915029. The reversal of 61266915016 is 61051966216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1258081 + ... + 1305871.

It is an arithmetic number, because the mean of its divisors is an integer number (1900090440).

Almost surely, 2^61266915016 is an apocalyptic number.

It is an amenable number.

61266915016 is a deficient number, since it is larger than the sum of its proper divisors (60338873144).

61266915016 is a wasteful number, since it uses less digits than its factorization.

61266915016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47966 (or 47962 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 61266915016 in words is "sixty-one billion, two hundred sixty-six million, nine hundred fifteen thousand, sixteen".