9951979345 has 32 divisors (see below), whose sum is σ = 14997954816. Its totient is φ = 6158515200.

The previous prime is 9951979343. The next prime is 9951979351. The reversal of 9951979345 is 5439791599.

It is not a de Polignac number, because 9951979345 - 2¹ = 9951979343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9951979343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41596 + ... + 147085.

It is an arithmetic number, because the mean of its divisors is an integer number (468686088).

Almost surely, 2^9951979345 is an apocalyptic number.

It is an amenable number.

9951979345 is a deficient number, since it is larger than the sum of its proper divisors (5045975471).

9951979345 is a wasteful number, since it uses less digits than its factorization.

9951979345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188841.

The product of its digits is 13778100, while the sum is 61.

The square root of 9951979345 is about 99759.6077829098. The cubic root of 9951979345 is about 2150.9805763252.

The spelling of 9951979345 in words is "nine billion, nine hundred fifty-one million, nine hundred seventy-nine thousand, three hundred forty-five".