20345031502651 has 8 divisors (see below), whose sum is σ = 20490523092144. Its totient is φ = 20200051308000.

The previous prime is 20345031502637. The next prime is 20345031502687. The reversal of 20345031502651 is 15620513054302.

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 20345031502651 - 2¹⁵ = 20345031469883 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 20345031502651.

It is not an unprimeable number, because it can be changed into a prime (20345031502451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127768860 + ... + 127927993.

It is an arithmetic number, because the mean of its divisors is an integer number (2561315386518).

Almost surely, 2^{20345031502651} is an apocalyptic number.

20345031502651 is a deficient number, since it is larger than the sum of its proper divisors (145491589493).

20345031502651 is a wasteful number, since it uses less digits than its factorization.

20345031502651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255697421.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 20345031502651 its reverse (15620513054302), we get a palindrome (35965544556953).

The spelling of 20345031502651 in words is "twenty trillion, three hundred forty-five billion, thirty-one million, five hundred two thousand, six hundred fifty-one".