61549365010 has 24 divisors (see below), whose sum is σ = 128876834700. Its totient is φ = 21102639264.

The previous prime is 61549365001. The next prime is 61549365029. The reversal of 61549365010 is 1056394516.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60296275809 + 1253089201 = 245553^2 + 35399^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62804985 + ... + 62805964.

Almost surely, 2^61549365010 is an apocalyptic number.

61549365010 is an abundant number, since it is smaller than the sum of its proper divisors (67327469690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61549365010 is a wasteful number, since it uses less digits than its factorization.

61549365010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125610970 (or 125610963 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 61549365010 in words is "sixty-one billion, five hundred forty-nine million, three hundred sixty-five thousand, ten".