20924593007 has 4 divisors (see below), whose sum is σ = 21434948976. Its totient is φ = 20414237040.

The previous prime is 20924592991. The next prime is 20924593009. The reversal of 20924593007 is 70039542902.

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

It is a cyclic number.

It is not a de Polignac number, because 20924593007 - 2⁴ = 20924592991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 510355927 = 20924593007 / (2 + 0 + 9 + 2 + 4 + 5 + 9 + 3 + 0 + 0 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20924593009) 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, 255177923 + ... + 255178004.

It is an arithmetic number, because the mean of its divisors is an integer number (5358737244).

Almost surely, 2^20924593007 is an apocalyptic number.

20924593007 is a deficient number, since it is larger than the sum of its proper divisors (510355969).

20924593007 is an equidigital number, since it uses as much as digits as its factorization.

20924593007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510355968.

The product of its (nonzero) digits is 136080, while the sum is 41.

The spelling of 20924593007 in words is "twenty billion, nine hundred twenty-four million, five hundred ninety-three thousand, seven".