20342026757 has 8 divisors (see below), whose sum is σ = 22074027360. Its totient is φ = 18633916080.

The previous prime is 20342026721. The next prime is 20342026777. The reversal of 20342026757 is 75762024302.

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

It is not a de Polignac number, because 20342026757 - 2²⁸ = 20073591301 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 20342026757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342026777) 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, 5970707 + ... + 5974112.

It is an arithmetic number, because the mean of its divisors is an integer number (2759253420).

Almost surely, 2^20342026757 is an apocalyptic number.

It is an amenable number.

20342026757 is a deficient number, since it is larger than the sum of its proper divisors (1732000603).

20342026757 is a wasteful number, since it uses less digits than its factorization.

20342026757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11944963.

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 20342026757 in words is "twenty billion, three hundred forty-two million, twenty-six thousand, seven hundred fifty-seven".