621410740801 has 4 divisors (see below), whose sum is σ = 621412520704. Its totient is φ = 621408960900.

The previous prime is 621410740799. The next prime is 621410740807. The reversal of 621410740801 is 108047014126.

It is a happy number.

621410740801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 621410740801 - 2¹ = 621410740799 is a prime.

It is a super-2 number, since 2×621410740801² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621410740807) 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, 174585 + ... + 1128406.

It is an arithmetic number, because the mean of its divisors is an integer number (155353130176).

Almost surely, 2^621410740801 is an apocalyptic number.

It is an amenable number.

621410740801 is a deficient number, since it is larger than the sum of its proper divisors (1779903).

621410740801 is a wasteful number, since it uses less digits than its factorization.

621410740801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779902.

The product of its (nonzero) digits is 10752, while the sum is 34.

Adding to 621410740801 its reverse (108047014126), we get a palindrome (729457754927).

The spelling of 621410740801 in words is "six hundred twenty-one billion, four hundred ten million, seven hundred forty thousand, eight hundred one".