6961921099 has 8 divisors (see below), whose sum is σ = 7958259968. Its totient is φ = 5966026920.

The previous prime is 6961921093. The next prime is 6961921171. The reversal of 6961921099 is 9901291696.

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

It is not a de Polignac number, because 6961921099 - 2⁵ = 6961921067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6961921093) 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, 76917 + ... + 140854.

It is an arithmetic number, because the mean of its divisors is an integer number (994782496).

Almost surely, 2^6961921099 is an apocalyptic number.

6961921099 is a deficient number, since it is larger than the sum of its proper divisors (996338869).

6961921099 is a wasteful number, since it uses less digits than its factorization.

6961921099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222345.

The product of its (nonzero) digits is 472392, while the sum is 52.

The square root of 6961921099 is about 83438.1273699260. The cubic root of 6961921099 is about 1909.4561922321.

The spelling of 6961921099 in words is "six billion, nine hundred sixty-one million, nine hundred twenty-one thousand, ninety-nine".