621349098049 has 9 divisors (see below), whose sum is σ = 624770652961. Its totient is φ = 617946192580.

The previous prime is 621349098023. The next prime is 621349098053. The reversal of 621349098049 is 940890943126.

The square root of 621349098049 is 788257.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 621349098049 - 2²⁵ = 621315543617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621349098089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 150555024 + ... + 150559150.

Almost surely, 2^621349098049 is an apocalyptic number.

621349098049 is the 788257-th square number.

621349098049 is the 394129-th centered octagonal number.

It is an amenable number.

621349098049 is a deficient number, since it is larger than the sum of its proper divisors (3421554912).

621349098049 is an frugal number, since it uses more digits than its factorization.

621349098049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8636 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 55.

The spelling of 621349098049 in words is "six hundred twenty-one billion, three hundred forty-nine million, ninety-eight thousand, forty-nine".