199609950551530 has 16 divisors (see below), whose sum is σ = 359466042950280. Its totient is φ = 79806617563392.

The previous prime is 199609950551449. The next prime is 199609950551551. The reversal of 199609950551530 is 35155059906991.

199609950551530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 78891540532281 + 120718410019249 = 8882091^2 + 10987193^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670309715 + ... + 4670352454.

Almost surely, 2^{199609950551530} is an apocalyptic number.

199609950551530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199609950551530 is a deficient number, since it is larger than the sum of its proper divisors (159856092398750).

199609950551530 is a wasteful number, since it uses less digits than its factorization.

199609950551530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9340664313.

The product of its (nonzero) digits is 73811250, while the sum is 67.

The spelling of 199609950551530 in words is "one hundred ninety-nine trillion, six hundred nine billion, nine hundred fifty million, five hundred fifty-one thousand, five hundred thirty".