61055530550 has 48 divisors (see below), whose sum is σ = 131614647552. Its totient is φ = 20638480800.

The previous prime is 61055530457. The next prime is 61055530561. The reversal of 61055530550 is 5503555016.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 61055530550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1203632 + ... + 1253331.

It is an arithmetic number, because the mean of its divisors is an integer number (2741971824).

Almost surely, 2^61055530550 is an apocalyptic number.

61055530550 is an abundant number, since it is smaller than the sum of its proper divisors (70559117002).

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

61055530550 is a wasteful number, since it uses less digits than its factorization.

61055530550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457053 (or 2457048 counting only the distinct ones).

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 61055530550 in words is "sixty-one billion, fifty-five million, five hundred thirty thousand, five hundred fifty".