61030980729 has 6 divisors (see below), whose sum is σ = 88155861066. Its totient is φ = 40687320480.

The previous prime is 61030980727. The next prime is 61030980749. The reversal of 61030980729 is 92708903016.

61030980729 is a `hidden beast` number, since 610 + 3 + 0 + 9 + 8 + 0 + 7 + 29 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60892965225 + 138015504 = 246765^2 + 11748^2 .

It is not a de Polignac number, because 61030980729 - 2¹ = 61030980727 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61030980727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3390610032 + ... + 3390610049.

It is an arithmetic number, because the mean of its divisors is an integer number (14692643511).

Almost surely, 2^61030980729 is an apocalyptic number.

It is an amenable number.

61030980729 is a deficient number, since it is larger than the sum of its proper divisors (27124880337).

61030980729 is a wasteful number, since it uses less digits than its factorization.

61030980729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6781220087 (or 6781220084 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 61030980729 in words is "sixty-one billion, thirty million, nine hundred eighty thousand, seven hundred twenty-nine".