20626367542517 has 32 divisors (see below), whose sum is σ = 23381613283968. Its totient is φ = 18030405600000.

The previous prime is 20626367542499. The next prime is 20626367542523. The reversal of 20626367542517 is 71524576362602.

It is a cyclic number.

It is not a de Polignac number, because 20626367542517 - 2¹⁸ = 20626367280373 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626367542567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21775142 + ... + 22702632.

It is an arithmetic number, because the mean of its divisors is an integer number (730675415124).

Almost surely, 2^{20626367542517} is an apocalyptic number.

It is an amenable number.

20626367542517 is a deficient number, since it is larger than the sum of its proper divisors (2755245741451).

20626367542517 is a wasteful number, since it uses less digits than its factorization.

20626367542517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928181.

The product of its (nonzero) digits is 25401600, while the sum is 56.

The spelling of 20626367542517 in words is "twenty trillion, six hundred twenty-six billion, three hundred sixty-seven million, five hundred forty-two thousand, five hundred seventeen".