621312454424362 has 4 divisors (see below), whose sum is σ = 931968681636546. Its totient is φ = 310656227212180.

The previous prime is 621312454424219. The next prime is 621312454424371. The reversal of 621312454424362 is 263424454213126.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 604429551352201 + 16882903072161 = 24585149^2 + 4108881^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155328113606089 + ... + 155328113606092.

Almost surely, 2^{621312454424362} is an apocalyptic number.

621312454424362 is a deficient number, since it is larger than the sum of its proper divisors (310656227212184).

621312454424362 is a wasteful number, since it uses less digits than its factorization.

621312454424362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310656227212183.

The product of its digits is 6635520, while the sum is 49.

The spelling of 621312454424362 in words is "six hundred twenty-one trillion, three hundred twelve billion, four hundred fifty-four million, four hundred twenty-four thousand, three hundred sixty-two".