20077043908 has 6 divisors (see below), whose sum is σ = 35134826846. Its totient is φ = 10038521952.

The previous prime is 20077043893. The next prime is 20077043941. The reversal of 20077043908 is 80934077002.

It can be written as a sum of positive squares in only one way, i.e., 15368065024 + 4708978884 = 123968^2 + 68622^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509630485 + ... + 2509630492.

Almost surely, 2^20077043908 is an apocalyptic number.

It is an amenable number.

20077043908 is a deficient number, since it is larger than the sum of its proper divisors (15057782938).

20077043908 is a wasteful number, since it uses less digits than its factorization.

20077043908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019260981 (or 5019260979 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 20077043908 in words is "twenty billion, seventy-seven million, forty-three thousand, nine hundred eight".