20765251676 has 12 divisors (see below), whose sum is σ = 39134512872. Its totient is φ = 9583962288.

The previous prime is 20765251631. The next prime is 20765251679. The reversal of 20765251676 is 67615256702.

It is a self number, because there is not a number n which added to its sum of digits gives 20765251676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20765251679) 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 3 ways as a sum of consecutive naturals, for example, 199665830 + ... + 199665933.

It is an arithmetic number, because the mean of its divisors is an integer number (3261209406).

Almost surely, 2^20765251676 is an apocalyptic number.

20765251676 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20765251676 is a deficient number, since it is larger than the sum of its proper divisors (18369261196).

20765251676 is a wasteful number, since it uses less digits than its factorization.

20765251676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399331780 (or 399331778 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 47.

The spelling of 20765251676 in words is "twenty billion, seven hundred sixty-five million, two hundred fifty-one thousand, six hundred seventy-six".