1621464650722 has 32 divisors (see below), whose sum is σ = 2813454185472. Its totient is φ = 686514358224.

The previous prime is 1621464650719. The next prime is 1621464650731. The reversal of 1621464650722 is 2270564641261.

It is a super-2 number, since 2×1621464650722² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1746288 + ... + 2508475.

It is an arithmetic number, because the mean of its divisors is an integer number (87920443296).

Almost surely, 2^{1621464650722} is an apocalyptic number.

1621464650722 is a deficient number, since it is larger than the sum of its proper divisors (1191989534750).

1621464650722 is a wasteful number, since it uses less digits than its factorization.

1621464650722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255102.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 1621464650722 in words is "one trillion, six hundred twenty-one billion, four hundred sixty-four million, six hundred fifty thousand, seven hundred twenty-two".