20215630093 has 4 divisors (see below), whose sum is σ = 20215927648. Its totient is φ = 20215332540.

The previous prime is 20215630081. The next prime is 20215630117. The reversal of 20215630093 is 39003651202.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20215630093 - 2¹³ = 20215621901 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 (20215630073) 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, 8680 + ... + 201262.

It is an arithmetic number, because the mean of its divisors is an integer number (5053981912).

Almost surely, 2^20215630093 is an apocalyptic number.

It is an amenable number.

20215630093 is a deficient number, since it is larger than the sum of its proper divisors (297555).

20215630093 is a wasteful number, since it uses less digits than its factorization.

20215630093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297554.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 20215630093 in words is "twenty billion, two hundred fifteen million, six hundred thirty thousand, ninety-three".