1621844873234 has 32 divisors (see below), whose sum is σ = 2748586582080. Its totient is φ = 713146747392.

The previous prime is 1621844873227. The next prime is 1621844873237. The reversal of 1621844873234 is 4323784481261.

It is not an unprimeable number, because it can be changed into a prime (1621844873237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17148704 + ... + 17243019.

It is an arithmetic number, because the mean of its divisors is an integer number (85893330690).

Almost surely, 2^{1621844873234} is an apocalyptic number.

1621844873234 is a deficient number, since it is larger than the sum of its proper divisors (1126741708846).

1621844873234 is a wasteful number, since it uses less digits than its factorization.

1621844873234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34391834.

The product of its digits is 6193152, while the sum is 53.

The spelling of 1621844873234 in words is "one trillion, six hundred twenty-one billion, eight hundred forty-four million, eight hundred seventy-three thousand, two hundred thirty-four".