20120676771 has 12 divisors (see below), whose sum is σ = 29049971928. Its totient is φ = 12381954624.

The previous prime is 20120676761. The next prime is 20120676799. The reversal of 20120676771 is 17767602102.

It is not a de Polignac number, because 20120676771 - 2⁵ = 20120676739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20120676761) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 19842370 + ... + 19843383.

It is an arithmetic number, because the mean of its divisors is an integer number (2420830994).

Almost surely, 2^20120676771 is an apocalyptic number.

20120676771 is a deficient number, since it is larger than the sum of its proper divisors (8929295157).

20120676771 is a wasteful number, since it uses less digits than its factorization.

20120676771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39685782 (or 39685769 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 39.

The spelling of 20120676771 in words is "twenty billion, one hundred twenty million, six hundred seventy-six thousand, seven hundred seventy-one".