20426215703 has 8 divisors (see below), whose sum is σ = 21045373776. Its totient is φ = 19812817600.

The previous prime is 20426215699. The next prime is 20426215757. The reversal of 20426215703 is 30751262402.

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 20426215703 - 2² = 20426215699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20426215703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20426215763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432793 + ... + 1446978.

It is an arithmetic number, because the mean of its divisors is an integer number (2630671722).

Almost surely, 2^20426215703 is an apocalyptic number.

20426215703 is a deficient number, since it is larger than the sum of its proper divisors (619158073).

20426215703 is a wasteful number, since it uses less digits than its factorization.

20426215703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879985.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20426215703 in words is "twenty billion, four hundred twenty-six million, two hundred fifteen thousand, seven hundred three".