61490129049 has 16 divisors (see below), whose sum is σ = 91102372800. Its totient is φ = 40990771008.

The previous prime is 61490129027. The next prime is 61490129087. The reversal of 61490129049 is 94092109416.

61490129049 is a `hidden beast` number, since 61 + 490 + 12 + 90 + 4 + 9 = 666.

It is not a de Polignac number, because 61490129049 - 2⁵ = 61490129017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61490128995 and 61490129013.

It is not an unprimeable number, because it can be changed into a prime (61490122049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409857 + ... + 539409.

It is an arithmetic number, because the mean of its divisors is an integer number (5693898300).

Almost surely, 2^61490129049 is an apocalyptic number.

It is an amenable number.

61490129049 is a deficient number, since it is larger than the sum of its proper divisors (29612243751).

61490129049 is a wasteful number, since it uses less digits than its factorization.

61490129049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147141 (or 147135 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The spelling of 61490129049 in words is "sixty-one billion, four hundred ninety million, one hundred twenty-nine thousand, forty-nine".