99801599351 has 4 divisors (see below), whose sum is σ = 102498939912. Its totient is φ = 97104258792.

The previous prime is 99801599341. The next prime is 99801599363. The reversal of 99801599351 is 15399510899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99801599351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99801599341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348670225 + ... + 1348670298.

It is an arithmetic number, because the mean of its divisors is an integer number (25624734978).

Almost surely, 2^99801599351 is an apocalyptic number.

99801599351 is a deficient number, since it is larger than the sum of its proper divisors (2697340561).

99801599351 is a wasteful number, since it uses less digits than its factorization.

99801599351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697340560.

The product of its (nonzero) digits is 3936600, while the sum is 59.

The spelling of 99801599351 in words is "ninety-nine billion, eight hundred one million, five hundred ninety-nine thousand, three hundred fifty-one".