20474705775667 has 12 divisors (see below), whose sum is σ = 24236428580560. Its totient is φ = 17181571278960.

The previous prime is 20474705775637. The next prime is 20474705775677. The reversal of 20474705775667 is 76657750747402.

It is not a de Polignac number, because 20474705775667 - 2¹⁵ = 20474705742899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20474705775617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6508169367 + ... + 6508172512.

Almost surely, 2^{20474705775667} is an apocalyptic number.

20474705775667 is a deficient number, since it is larger than the sum of its proper divisors (3761722804893).

20474705775667 is a wasteful number, since it uses less digits than its factorization.

20474705775667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13016341914 (or 13016341903 counting only the distinct ones).

The product of its (nonzero) digits is 484041600, while the sum is 67.

The spelling of 20474705775667 in words is "twenty trillion, four hundred seventy-four billion, seven hundred five million, seven hundred seventy-five thousand, six hundred sixty-seven".