6191621466 has 48 divisors (see below), whose sum is σ = 13169664288. Its totient is φ = 1940234400.

The previous prime is 6191621419. The next prime is 6191621479. The reversal of 6191621466 is 6641261916.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 272836 + ... + 294656.

It is an arithmetic number, because the mean of its divisors is an integer number (274368006).

Almost surely, 2^6191621466 is an apocalyptic number.

6191621466 is an abundant number, since it is smaller than the sum of its proper divisors (6978042822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6191621466 is a wasteful number, since it uses less digits than its factorization.

6191621466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21995 (or 21976 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 6191621466 is about 78686.8570092871. The cubic root of 6191621466 is about 1836.2626433280.

The spelling of 6191621466 in words is "six billion, one hundred ninety-one million, six hundred twenty-one thousand, four hundred sixty-six".