9951086951 has 4 divisors (see below), whose sum is σ = 10716555192. Its totient is φ = 9185618712.

The previous prime is 9951086947. The next prime is 9951086963. The reversal of 9951086951 is 1596801599.

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

It is a cyclic number.

It is not a de Polignac number, because 9951086951 - 2² = 9951086947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9951086893 and 9951086902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9951016951) 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, 382734101 + ... + 382734126.

It is an arithmetic number, because the mean of its divisors is an integer number (2679138798).

Almost surely, 2^9951086951 is an apocalyptic number.

9951086951 is a deficient number, since it is larger than the sum of its proper divisors (765468241).

9951086951 is a wasteful number, since it uses less digits than its factorization.

9951086951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765468240.

The product of its (nonzero) digits is 874800, while the sum is 53.

The square root of 9951086951 is about 99755.1349605623. The cubic root of 9951086951 is about 2150.9162815930.

The spelling of 9951086951 in words is "nine billion, nine hundred fifty-one million, eighty-six thousand, nine hundred fifty-one".