220015509061 has 2 divisors, whose sum is σ = 220015509062. Its totient is φ = 220015509060.

The previous prime is 220015509023. The next prime is 220015509079. The reversal of 220015509061 is 160905510022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203654540961 + 16360968100 = 451281^2 + 127910^2 .

It is a cyclic number.

It is not a de Polignac number, because 220015509061 - 2⁹ = 220015508549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220015509011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110007754530 + 110007754531.

It is an arithmetic number, because the mean of its divisors is an integer number (110007754531).

Almost surely, 2^220015509061 is an apocalyptic number.

It is an amenable number.

220015509061 is a deficient number, since it is larger than the sum of its proper divisors (1).

220015509061 is an equidigital number, since it uses as much as digits as its factorization.

220015509061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 220015509061 in words is "two hundred twenty billion, fifteen million, five hundred nine thousand, sixty-one".