9999613953 has 12 divisors (see below), whose sum is σ = 16507299328. Its totient is φ = 5714065080.

The previous prime is 9999613951. The next prime is 9999613973. The reversal of 9999613953 is 3593169999.

9999613953 is a `hidden beast` number, since 9 + 9 + 9 + 9 + 613 + 9 + 5 + 3 = 666.

It is not a de Polignac number, because 9999613953 - 2¹ = 9999613951 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 158724031 = 9999613953 / (9 + 9 + 9 + 9 + 6 + 1 + 3 + 9 + 5 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999613951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79361953 + ... + 79362078.

It is a Proth number, since it is equal to 76291 ⋅ 2¹⁷ + 1 and 76291 < 2¹⁷.

Almost surely, 2^9999613953 is an apocalyptic number.

It is an amenable number.

9999613953 is a deficient number, since it is larger than the sum of its proper divisors (6507685375).

9999613953 is a wasteful number, since it uses less digits than its factorization.

9999613953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158724044 (or 158724041 counting only the distinct ones).

The product of its digits is 15943230, while the sum is 63.

The square root of 9999613953 is about 99998.0697463706. The cubic root of 9999613953 is about 2154.4069659068.

The spelling of 9999613953 in words is "nine billion, nine hundred ninety-nine million, six hundred thirteen thousand, nine hundred fifty-three".