61028045550 has 36 divisors (see below), whose sum is σ = 163962016920. Its totient is φ = 16274145360.

The previous prime is 61028045503. The next prime is 61028045557. The reversal of 61028045550 is 5554082016.

61028045550 is a `hidden beast` number, since 61 + 0 + 2 + 8 + 0 + 45 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61028045557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67808490 + ... + 67809389.

It is an arithmetic number, because the mean of its divisors is an integer number (4554500470).

Almost surely, 2^61028045550 is an apocalyptic number.

61028045550 is an abundant number, since it is smaller than the sum of its proper divisors (102933971370).

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

61028045550 is a wasteful number, since it uses less digits than its factorization.

61028045550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135617897 (or 135617889 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 61028045550 in words is "sixty-one billion, twenty-eight million, forty-five thousand, five hundred fifty".