9915116451 has 4 divisors (see below), whose sum is σ = 13220155272. Its totient is φ = 6610077632.

The previous prime is 9915116423. The next prime is 9915116479. The reversal of 9915116451 is 1546115199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1546115199 = 3 ⋅515371733.

It is an interprime number because it is at equal distance from previous prime (9915116423) and next prime (9915116479).

It is a cyclic number.

It is not a de Polignac number, because 9915116451 - 2¹¹ = 9915114403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9915116411) 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, 1652519406 + ... + 1652519411.

It is an arithmetic number, because the mean of its divisors is an integer number (3305038818).

Almost surely, 2^9915116451 is an apocalyptic number.

9915116451 is a deficient number, since it is larger than the sum of its proper divisors (3305038821).

9915116451 is a wasteful number, since it uses less digits than its factorization.

9915116451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3305038820.

The product of its digits is 48600, while the sum is 42.

The square root of 9915116451 is about 99574.6777599606. The cubic root of 9915116451 is about 2148.3214915132.

The spelling of 9915116451 in words is "nine billion, nine hundred fifteen million, one hundred sixteen thousand, four hundred fifty-one".