20266611136407 has 12 divisors (see below), whose sum is σ = 29274744620680. Its totient is φ = 13510727587728.

The previous prime is 20266611136357. The next prime is 20266611136411. The reversal of 20266611136407 is 70463111666202.

It is not a de Polignac number, because 20266611136407 - 2¹⁵ = 20266611103639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266611136417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28504588 + ... + 29206929.

Almost surely, 2^{20266611136407} is an apocalyptic number.

20266611136407 is a deficient number, since it is larger than the sum of its proper divisors (9008133484273).

20266611136407 is a wasteful number, since it uses less digits than its factorization.

20266611136407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57750542 (or 57750539 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 20266611136407 in words is "twenty trillion, two hundred sixty-six billion, six hundred eleven million, one hundred thirty-six thousand, four hundred seven".