20777676462 has 12 divisors (see below), whose sum is σ = 45018299040. Its totient is φ = 6925892148.

The previous prime is 20777676383. The next prime is 20777676463. The reversal of 20777676462 is 26467677702.

It is a junction number, because it is equal to n+sod(n) for n = 20777676399 and 20777676408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20777676463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 577157662 + ... + 577157697.

It is an arithmetic number, because the mean of its divisors is an integer number (3751524920).

Almost surely, 2^20777676462 is an apocalyptic number.

20777676462 is an abundant number, since it is smaller than the sum of its proper divisors (24240622578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20777676462 is a wasteful number, since it uses less digits than its factorization.

20777676462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154315367 (or 1154315364 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 54.

The spelling of 20777676462 in words is "twenty billion, seven hundred seventy-seven million, six hundred seventy-six thousand, four hundred sixty-two".