20477839714 has 4 divisors (see below), whose sum is σ = 30716759574. Its totient is φ = 10238919856.

The previous prime is 20477839693. The next prime is 20477839717. The reversal of 20477839714 is 41793877402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19302378489 + 1175461225 = 138933^2 + 34285^2 .

It is not an unprimeable number, because it can be changed into a prime (20477839717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5119459927 + ... + 5119459930.

Almost surely, 2^20477839714 is an apocalyptic number.

20477839714 is a deficient number, since it is larger than the sum of its proper divisors (10238919860).

20477839714 is a wasteful number, since it uses less digits than its factorization.

20477839714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238919859.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 20477839714 in words is "twenty billion, four hundred seventy-seven million, eight hundred thirty-nine thousand, seven hundred fourteen".