20420624695 has 8 divisors (see below), whose sum is σ = 24505531920. Its totient is φ = 16335978240.

The previous prime is 20420624687. The next prime is 20420624713. The reversal of 20420624695 is 59642602402.

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

It is not a de Polignac number, because 20420624695 - 2³ = 20420624687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222576 + ... + 300634.

It is an arithmetic number, because the mean of its divisors is an integer number (3063191490).

Almost surely, 2^20420624695 is an apocalyptic number.

20420624695 is a deficient number, since it is larger than the sum of its proper divisors (4084907225).

20420624695 is an equidigital number, since it uses as much as digits as its factorization.

20420624695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130385.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 20420624695 in words is "twenty billion, four hundred twenty million, six hundred twenty-four thousand, six hundred ninety-five".