621053434425052 has 24 divisors (see below), whose sum is σ = 1112127109478000. Its totient is φ = 303302937805056.

The previous prime is 621053434425031. The next prime is 621053434425059. The reversal of 621053434425052 is 250524434350126.

It is a happy number.

It is a super-2 number, since 2×621053434425052² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 621053434424993 and 621053434425011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621053434425059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10345474 + ... + 36730582.

Almost surely, 2^{621053434425052} is an apocalyptic number.

It is an amenable number.

621053434425052 is a deficient number, since it is larger than the sum of its proper divisors (491073675052948).

621053434425052 is a wasteful number, since it uses less digits than its factorization.

621053434425052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26522005 (or 26522003 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 46.

Adding to 621053434425052 its reverse (250524434350126), we get a palindrome (871577868775178).

The spelling of 621053434425052 in words is "six hundred twenty-one trillion, fifty-three billion, four hundred thirty-four million, four hundred twenty-five thousand, fifty-two".