99891415153 has 4 divisors (see below), whose sum is σ = 103335946740. Its totient is φ = 96446883568.

The previous prime is 99891415133. The next prime is 99891415187. The reversal of 99891415153 is 35151419899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35151419899 = 199 ⋅176640301.

It can be written as a sum of positive squares in 2 ways, for example, as 80629306209 + 19262108944 = 283953^2 + 138788^2 .

It is a cyclic number.

It is not a de Polignac number, because 99891415153 - 2¹⁷ = 99891284081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99891415094 and 99891415103.

It is not an unprimeable number, because it can be changed into a prime (99891415123) 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, 1722265750 + ... + 1722265807.

It is an arithmetic number, because the mean of its divisors is an integer number (25833986685).

Almost surely, 2^99891415153 is an apocalyptic number.

It is an amenable number.

99891415153 is a deficient number, since it is larger than the sum of its proper divisors (3444531587).

99891415153 is a wasteful number, since it uses less digits than its factorization.

99891415153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444531586.

The product of its digits is 1749600, while the sum is 55.

The spelling of 99891415153 in words is "ninety-nine billion, eight hundred ninety-one million, four hundred fifteen thousand, one hundred fifty-three".