9945906051 has 8 divisors (see below), whose sum is σ = 13385145024. Its totient is φ = 6568635560.

The previous prime is 9945906043. The next prime is 9945906071. The reversal of 9945906051 is 1506095499.

9945906051 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9945906051 - 2³ = 9945906043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9945906011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15491745 + ... + 15492386.

It is an arithmetic number, because the mean of its divisors is an integer number (1673143128).

Almost surely, 2^9945906051 is an apocalyptic number.

9945906051 is a deficient number, since it is larger than the sum of its proper divisors (3439238973).

9945906051 is a wasteful number, since it uses less digits than its factorization.

9945906051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30984241.

The product of its (nonzero) digits is 437400, while the sum is 48.

The square root of 9945906051 is about 99729.1634929322. The cubic root of 9945906051 is about 2150.5429348852.

The spelling of 9945906051 in words is "nine billion, nine hundred forty-five million, nine hundred six thousand, fifty-one".