61550055006650 has 24 divisors (see below), whose sum is σ = 130837831214880. Its totient is φ = 21102876002160.

The previous prime is 61550055006619. The next prime is 61550055006659. The reversal of 61550055006650 is 5660055005516.

It is not an unprimeable number, because it can be changed into a prime (61550055006659) 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, 87928649660 + ... + 87928650359.

It is an arithmetic number, because the mean of its divisors is an integer number (5451576300620).

Almost surely, 2^{61550055006650} is an apocalyptic number.

61550055006650 is an abundant number, since it is smaller than the sum of its proper divisors (69287776208230).

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

61550055006650 is a wasteful number, since it uses less digits than its factorization.

61550055006650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175857300038 (or 175857300033 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 61550055006650 in words is "sixty-one trillion, five hundred fifty billion, fifty-five million, six thousand, six hundred fifty".