621503120341 has 4 divisors (see below), whose sum is σ = 627656616684. Its totient is φ = 615349624000.

The previous prime is 621503120297. The next prime is 621503120353. The reversal of 621503120341 is 143021305126.

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

It can be written as a sum of positive squares in 2 ways, for example, as 561681298116 + 59821822225 = 749454^2 + 244585^2 .

It is a cyclic number.

It is not a de Polignac number, because 621503120341 - 2⁷ = 621503120213 is a prime.

It is a super-2 number, since 2×621503120341² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621503120141) 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, 3076748020 + ... + 3076748221.

It is an arithmetic number, because the mean of its divisors is an integer number (156914154171).

Almost surely, 2^621503120341 is an apocalyptic number.

It is an amenable number.

621503120341 is a deficient number, since it is larger than the sum of its proper divisors (6153496343).

621503120341 is a wasteful number, since it uses less digits than its factorization.

621503120341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153496342.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 621503120341 its reverse (143021305126), we get a palindrome (764524425467).

The spelling of 621503120341 in words is "six hundred twenty-one billion, five hundred three million, one hundred twenty thousand, three hundred forty-one".