9950359227561 has 45 divisors (see below), whose sum is σ = 14915994186951. Its totient is φ = 6610501397808.

The previous prime is 9950359227539. The next prime is 9950359227637. The reversal of 9950359227561 is 1657229530599.

The square root of 9950359227561 is 3154419.

It is a perfect power (a square), and thus also a powerful number.

9950359227561 is a `hidden beast` number, since 9 + 9 + 5 + 0 + 359 + 2 + 275 + 6 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6147250803225 + 3803108424336 = 2479365^2 + 1950156^2 .

It is not a de Polignac number, because 9950359227561 - 2¹⁹ = 9950358703273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9950359227521) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 13144463595 + ... + 13144464351.

Almost surely, 2^{9950359227561} is an apocalyptic number.

9950359227561 is the 3154419-th square number.

9950359227561 is the 1577210-th centered octagonal number.

It is an amenable number.

9950359227561 is a deficient number, since it is larger than the sum of its proper divisors (4965634959390).

9950359227561 is an frugal number, since it uses more digits than its factorization.

9950359227561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 45927000, while the sum is 63.

The spelling of 9950359227561 in words is "nine trillion, nine hundred fifty billion, three hundred fifty-nine million, two hundred twenty-seven thousand, five hundred sixty-one".