99275931661 has 8 divisors (see below), whose sum is σ = 100377696384. Its totient is φ = 98175765120.

The previous prime is 99275931647. The next prime is 99275931697. The reversal of 99275931661 is 16613957299.

It is a happy number.

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 99275931661 - 2⁷ = 99275931533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99275931596 and 99275931605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99275937661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274405 + ... + 523306.

It is an arithmetic number, because the mean of its divisors is an integer number (12547212048).

Almost surely, 2^99275931661 is an apocalyptic number.

It is an amenable number.

99275931661 is a deficient number, since it is larger than the sum of its proper divisors (1101764723).

99275931661 is a wasteful number, since it uses less digits than its factorization.

99275931661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799091.

The product of its digits is 5511240, while the sum is 58.

The spelling of 99275931661 in words is "ninety-nine billion, two hundred seventy-five million, nine hundred thirty-one thousand, six hundred sixty-one".