61000204975 has 12 divisors (see below), whose sum is σ = 78928961616. Its totient is φ = 46678417280.

The previous prime is 61000204973. The next prime is 61000204981. The reversal of 61000204975 is 57940200016.

It is not a de Polignac number, because 61000204975 - 2¹ = 61000204973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61000204975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61000204973) 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, 53043082 + ... + 53044231.

It is an arithmetic number, because the mean of its divisors is an integer number (6577413468).

Almost surely, 2^61000204975 is an apocalyptic number.

61000204975 is a deficient number, since it is larger than the sum of its proper divisors (17928756641).

61000204975 is a wasteful number, since it uses less digits than its factorization.

61000204975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106087346 (or 106087341 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 61000204975 in words is "sixty-one billion, two hundred four thousand, nine hundred seventy-five".