20408265007 has 8 divisors (see below), whose sum is σ = 21980742336. Its totient is φ = 18836160672.

The previous prime is 20408264983. The next prime is 20408265067. The reversal of 20408265007 is 70056280402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20408265007 - 2¹⁹ = 20407740719 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 (20408265067) 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 7 ways as a sum of consecutive naturals, for example, 26058 + ... + 203704.

It is an arithmetic number, because the mean of its divisors is an integer number (2747592792).

Almost surely, 2^20408265007 is an apocalyptic number.

20408265007 is a deficient number, since it is larger than the sum of its proper divisors (1572477329).

20408265007 is a wasteful number, since it uses less digits than its factorization.

20408265007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186497.

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 20408265007 in words is "twenty billion, four hundred eight million, two hundred sixty-five thousand, seven".