621750343148673 has 16 divisors (see below), whose sum is σ = 831999012943296. Its totient is φ = 413000971830720.

The previous prime is 621750343148653. The next prime is 621750343148689. The reversal of 621750343148673 is 376841343057126.

It is not a de Polignac number, because 621750343148673 - 2²⁵ = 621750309594241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (621750343148653) 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, 120741015 + ... + 125785107.

It is an arithmetic number, because the mean of its divisors is an integer number (51999938308956).

Almost surely, 2^{621750343148673} is an apocalyptic number.

It is an amenable number.

621750343148673 is a deficient number, since it is larger than the sum of its proper divisors (210248669794623).

621750343148673 is a wasteful number, since it uses less digits than its factorization.

621750343148673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192704.

The product of its (nonzero) digits is 60963840, while the sum is 60.

The spelling of 621750343148673 in words is "six hundred twenty-one trillion, seven hundred fifty billion, three hundred forty-three million, one hundred forty-eight thousand, six hundred seventy-three".