20677877602 has 16 divisors (see below), whose sum is σ = 31733207352. Its totient is φ = 10101761280.

The previous prime is 20677877599. The next prime is 20677877663.

20677877602 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 20308815081 + 369062521 = 142509^2 + 19211^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20677877602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379173 + ... + 430264.

Almost surely, 2^20677877602 is an apocalyptic number.

20677877602 is a deficient number, since it is larger than the sum of its proper divisors (11055329750).

20677877602 is a wasteful number, since it uses less digits than its factorization.

20677877602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809733.

The product of its (nonzero) digits is 2765952, while the sum is 52.

The spelling of 20677877602 in words is "twenty billion, six hundred seventy-seven million, eight hundred seventy-seven thousand, six hundred two".