30621648797 has 4 divisors (see below), whose sum is σ = 30937335996. Its totient is φ = 30305961600.

The previous prime is 30621648791. The next prime is 30621648809. The reversal of 30621648797 is 79784612603.

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 21322132441 + 9299516356 = 146021^2 + 96434^2 .

It is a cyclic number.

It is not a de Polignac number, because 30621648797 - 2¹⁴ = 30621632413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30621648791) 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 3 ways as a sum of consecutive naturals, for example, 157843454 + ... + 157843647.

It is an arithmetic number, because the mean of its divisors is an integer number (7734333999).

Almost surely, 2^30621648797 is an apocalyptic number.

It is an amenable number.

30621648797 is a deficient number, since it is larger than the sum of its proper divisors (315687199).

30621648797 is an equidigital number, since it uses as much as digits as its factorization.

30621648797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315687198.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 30621648797 in words is "thirty billion, six hundred twenty-one million, six hundred forty-eight thousand, seven hundred ninety-seven".