1621622044722 has 16 divisors (see below), whose sum is σ = 3243727586880. Its totient is φ = 540460098672.

The previous prime is 1621622044607. The next prime is 1621622044753. The reversal of 1621622044722 is 2274402261261.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20102118 + ... + 20182625.

It is an arithmetic number, because the mean of its divisors is an integer number (202732974180).

Almost surely, 2^{1621622044722} is an apocalyptic number.

1621622044722 is an abundant number, since it is smaller than the sum of its proper divisors (1622105542158).

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

1621622044722 is a wasteful number, since it uses less digits than its factorization.

1621622044722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40291457.

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 1621622044722 in words is "one trillion, six hundred twenty-one billion, six hundred twenty-two million, forty-four thousand, seven hundred twenty-two".