20102700126766 has 4 divisors (see below), whose sum is σ = 30154050190152. Its totient is φ = 10051350063382.

The previous prime is 20102700126727. The next prime is 20102700126767. The reversal of 20102700126766 is 66762100720102.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102700126767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025675031690 + ... + 5025675031693.

It is an arithmetic number, because the mean of its divisors is an integer number (7538512547538).

Almost surely, 2^{20102700126766} is an apocalyptic number.

20102700126766 is a deficient number, since it is larger than the sum of its proper divisors (10051350063386).

20102700126766 is a wasteful number, since it uses less digits than its factorization.

20102700126766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10051350063385.

The product of its (nonzero) digits is 84672, while the sum is 40.

Adding to 20102700126766 its reverse (66762100720102), we get a palindrome (86864800846868).

The spelling of 20102700126766 in words is "twenty trillion, one hundred two billion, seven hundred million, one hundred twenty-six thousand, seven hundred sixty-six".