61010878329 has 12 divisors (see below), whose sum is σ = 88161430500. Its totient is φ = 40657946784.

The previous prime is 61010878307. The next prime is 61010878337. The reversal of 61010878329 is 92387801016.

61010878329 is a `hidden beast` number, since 610 + 1 + 0 + 8 + 7 + 8 + 3 + 29 = 666.

61010878329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 25300083600 + 35710794729 = 159060^2 + 188973^2 .

It is not a de Polignac number, because 61010878329 - 2²⁷ = 60876660601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61010878529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1306794 + ... + 1352675.

It is an arithmetic number, because the mean of its divisors is an integer number (7346785875).

Almost surely, 2^61010878329 is an apocalyptic number.

It is an amenable number.

61010878329 is a deficient number, since it is larger than the sum of its proper divisors (27150552171).

61010878329 is a wasteful number, since it uses less digits than its factorization.

61010878329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662024 (or 2662021 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 61010878329 in words is "sixty-one billion, ten million, eight hundred seventy-eight thousand, three hundred twenty-nine".