621522236116 has 12 divisors (see below), whose sum is σ = 1087670565940. Its totient is φ = 310759217280.

The previous prime is 621522236099. The next prime is 621522236117. The reversal of 621522236116 is 611632225126.

It can be written as a sum of positive squares in 2 ways, for example, as 236588851216 + 384933384900 = 486404^2 + 620430^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621522236117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468946 + ... + 1209526.

Almost surely, 2^621522236116 is an apocalyptic number.

It is an amenable number.

621522236116 is a deficient number, since it is larger than the sum of its proper divisors (466148329824).

621522236116 is a wasteful number, since it uses less digits than its factorization.

621522236116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950394 (or 950392 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The spelling of 621522236116 in words is "six hundred twenty-one billion, five hundred twenty-two million, two hundred thirty-six thousand, one hundred sixteen".