99727830761 has 8 divisors (see below), whose sum is σ = 107404525704. Its totient is φ = 92051896320.

The previous prime is 99727830757. The next prime is 99727830791. The reversal of 99727830761 is 16703872799.

It can be written as a sum of positive squares in 4 ways, for example, as 4243740736 + 95484090025 = 65144^2 + 309005^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99727830761 - 2² = 99727830757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99727830761.

It is not an unprimeable number, because it can be changed into a prime (99727830721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98471 + ... + 457331.

It is an arithmetic number, because the mean of its divisors is an integer number (13425565713).

Almost surely, 2^99727830761 is an apocalyptic number.

It is an amenable number.

99727830761 is a deficient number, since it is larger than the sum of its proper divisors (7676694943).

99727830761 is a wasteful number, since it uses less digits than its factorization.

99727830761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380251.

The product of its (nonzero) digits is 8001504, while the sum is 59.

The spelling of 99727830761 in words is "ninety-nine billion, seven hundred twenty-seven million, eight hundred thirty thousand, seven hundred sixty-one".