20770517468671 has 16 divisors (see below), whose sum is σ = 21808016519040. Its totient is φ = 19754452539360.

The previous prime is 20770517468663. The next prime is 20770517468719. The reversal of 20770517468671 is 17686471507702.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20770517468671 - 2³ = 20770517468663 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 (20770517463671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87259800 + ... + 87497506.

It is an arithmetic number, because the mean of its divisors is an integer number (1363001032440).

Almost surely, 2^{20770517468671} is an apocalyptic number.

20770517468671 is a deficient number, since it is larger than the sum of its proper divisors (1037499050369).

20770517468671 is a wasteful number, since it uses less digits than its factorization.

20770517468671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282774.

The product of its (nonzero) digits is 27659520, while the sum is 61.

The spelling of 20770517468671 in words is "twenty trillion, seven hundred seventy billion, five hundred seventeen million, four hundred sixty-eight thousand, six hundred seventy-one".