61220550086 has 8 divisors (see below), whose sum is σ = 92224949544. Its totient is φ = 30478900240.

The previous prime is 61220550077. The next prime is 61220550103. The reversal of 61220550086 is 68005502216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65686820 + ... + 65687751.

It is an arithmetic number, because the mean of its divisors is an integer number (11528118693).

Almost surely, 2^61220550086 is an apocalyptic number.

61220550086 is a deficient number, since it is larger than the sum of its proper divisors (31004399458).

61220550086 is a wasteful number, since it uses less digits than its factorization.

61220550086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131374806.

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 61220550086 in words is "sixty-one billion, two hundred twenty million, five hundred fifty thousand, eighty-six".