621142636354 has 8 divisors (see below), whose sum is σ = 932388624828. Its totient is φ = 310346428080.

The previous prime is 621142636351. The next prime is 621142636379. The reversal of 621142636354 is 453636241126.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 571135390225 + 50007246129 = 755735^2 + 223623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 621142636354.

It is not an unprimeable number, because it can be changed into a prime (621142636351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112441597 + ... + 112447120.

Almost surely, 2^621142636354 is an apocalyptic number.

621142636354 is a deficient number, since it is larger than the sum of its proper divisors (311245988474).

621142636354 is a wasteful number, since it uses less digits than its factorization.

621142636354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224890100.

The product of its digits is 622080, while the sum is 43.

The spelling of 621142636354 in words is "six hundred twenty-one billion, one hundred forty-two million, six hundred thirty-six thousand, three hundred fifty-four".