9901041951 has 4 divisors (see below), whose sum is σ = 13201389272. Its totient is φ = 6600694632.

The previous prime is 9901041947. The next prime is 9901041967. The reversal of 9901041951 is 1591401099.

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

It is not a de Polignac number, because 9901041951 - 2² = 9901041947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901041851) 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, 1650173656 + ... + 1650173661.

It is an arithmetic number, because the mean of its divisors is an integer number (3300347318).

Almost surely, 2^9901041951 is an apocalyptic number.

9901041951 is a deficient number, since it is larger than the sum of its proper divisors (3300347321).

9901041951 is a wasteful number, since it uses less digits than its factorization.

9901041951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300347320.

The product of its (nonzero) digits is 14580, while the sum is 39.

The square root of 9901041951 is about 99503.9795736834. The cubic root of 9901041951 is about 2147.3044965979.

The spelling of 9901041951 in words is "nine billion, nine hundred one million, forty-one thousand, nine hundred fifty-one".