20027020136651 has 4 divisors (see below), whose sum is σ = 21847658330904. Its totient is φ = 18206381942400.

The previous prime is 20027020136633. The next prime is 20027020136677. The reversal of 20027020136651 is 15663102072002.

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

It is a cyclic number.

It is not a de Polignac number, because 20027020136651 - 2²² = 20027015942347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20027020156651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 910319097110 + ... + 910319097131.

It is an arithmetic number, because the mean of its divisors is an integer number (5461914582726).

Almost surely, 2^{20027020136651} is an apocalyptic number.

20027020136651 is a deficient number, since it is larger than the sum of its proper divisors (1820638194253).

20027020136651 is a wasteful number, since it uses less digits than its factorization.

20027020136651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820638194252.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 20027020136651 in words is "twenty trillion, twenty-seven billion, twenty million, one hundred thirty-six thousand, six hundred fifty-one".