9901672951 has 4 divisors (see below), whose sum is σ = 9901983952. Its totient is φ = 9901361952.

The previous prime is 9901672871. The next prime is 9901672961. The reversal of 9901672951 is 1592761099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1592761099 = 4219 ⋅377521.

It is a cyclic number.

It is not a de Polignac number, because 9901672951 - 2²⁷ = 9767455223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9901672895 and 9901672904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901672961) 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, 101490 + ... + 173503.

It is an arithmetic number, because the mean of its divisors is an integer number (2475495988).

Almost surely, 2^9901672951 is an apocalyptic number.

9901672951 is a deficient number, since it is larger than the sum of its proper divisors (311001).

9901672951 is a wasteful number, since it uses less digits than its factorization.

9901672951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311000.

The product of its (nonzero) digits is 306180, while the sum is 49.

The square root of 9901672951 is about 99507.1502506227. The cubic root of 9901672951 is about 2147.3501120109.

The spelling of 9901672951 in words is "nine billion, nine hundred one million, six hundred seventy-two thousand, nine hundred fifty-one".