621744132933 has 48 divisors (see below), whose sum is σ = 1161147326976. Its totient is φ = 322983955440.

The previous prime is 621744132929. The next prime is 621744132967. The reversal of 621744132933 is 339231447126.

621744132933 is a `hidden beast` number, since 62 + 174 + 413 + 2 + 9 + 3 + 3 = 666.

It is not a de Polignac number, because 621744132933 - 2² = 621744132929 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621744134933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16595691 + ... + 16633112.

It is an arithmetic number, because the mean of its divisors is an integer number (24190569312).

Almost surely, 2^621744132933 is an apocalyptic number.

621744132933 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

621744132933 is a deficient number, since it is larger than the sum of its proper divisors (539403194043).

621744132933 is a wasteful number, since it uses less digits than its factorization.

621744132933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33228836 (or 33228824 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The spelling of 621744132933 in words is "six hundred twenty-one billion, seven hundred forty-four million, one hundred thirty-two thousand, nine hundred thirty-three".