61260204545 has 16 divisors (see below), whose sum is σ = 74364480000. Its totient is φ = 48440396928.

The previous prime is 61260204527. The next prime is 61260204547. The reversal of 61260204545 is 54540206216.

It is a cyclic number.

It is not a de Polignac number, because 61260204545 - 2¹⁶ = 61260139009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61260204547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1320656 + ... + 1366254.

It is an arithmetic number, because the mean of its divisors is an integer number (4647780000).

Almost surely, 2^61260204545 is an apocalyptic number.

It is an amenable number.

61260204545 is a deficient number, since it is larger than the sum of its proper divisors (13104275455).

61260204545 is a wasteful number, since it uses less digits than its factorization.

61260204545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48712.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 61260204545 in words is "sixty-one billion, two hundred sixty million, two hundred four thousand, five hundred forty-five".