20771886134 has 8 divisors (see below), whose sum is σ = 31162903320. Its totient is φ = 10384251696.

The previous prime is 20771886127. The next prime is 20771886181. The reversal of 20771886134 is 43168817702.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20771886134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 830279 + ... + 854930.

It is an arithmetic number, because the mean of its divisors is an integer number (3895362915).

Almost surely, 2^20771886134 is an apocalyptic number.

20771886134 is a deficient number, since it is larger than the sum of its proper divisors (10391017186).

20771886134 is a wasteful number, since it uses less digits than its factorization.

20771886134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691374.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 20771886134 in words is "twenty billion, seven hundred seventy-one million, eight hundred eighty-six thousand, one hundred thirty-four".