61449190429 has 12 divisors (see below), whose sum is σ = 69872409180. Its totient is φ = 53936590400.

The previous prime is 61449190427. The next prime is 61449190457. The reversal of 61449190429 is 92409194416.

61449190429 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 39282447204 + 22166743225 = 198198^2 + 148885^2 .

It is not a de Polignac number, because 61449190429 - 2¹ = 61449190427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61449190427) 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, 8752432 + ... + 8759449.

It is an arithmetic number, because the mean of its divisors is an integer number (5822700765).

Almost surely, 2^61449190429 is an apocalyptic number.

It is an amenable number.

61449190429 is a deficient number, since it is larger than the sum of its proper divisors (8423218751).

61449190429 is a wasteful number, since it uses less digits than its factorization.

61449190429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17511932 (or 17511921 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The spelling of 61449190429 in words is "sixty-one billion, four hundred forty-nine million, one hundred ninety thousand, four hundred twenty-nine".