20321166076 has 6 divisors (see below), whose sum is σ = 35562040640. Its totient is φ = 10160583036.

The previous prime is 20321166067. The next prime is 20321166091. The reversal of 20321166076 is 67066112302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540145756 + ... + 2540145763.

Almost surely, 2^20321166076 is an apocalyptic number.

It is an amenable number.

20321166076 is a deficient number, since it is larger than the sum of its proper divisors (15240874564).

20321166076 is a wasteful number, since it uses less digits than its factorization.

20321166076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080291523 (or 5080291521 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

Adding to 20321166076 its reverse (67066112302), we get a palindrome (87387278378).

The spelling of 20321166076 in words is "twenty billion, three hundred twenty-one million, one hundred sixty-six thousand, seventy-six".