20133377647 has 2 divisors, whose sum is σ = 20133377648. Its totient is φ = 20133377646.

The previous prime is 20133377611. The next prime is 20133377659. The reversal of 20133377647 is 74677333102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20133377647 - 2¹⁵ = 20133344879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20133377947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10066688823 + 10066688824.

It is an arithmetic number, because the mean of its divisors is an integer number (10066688824).

Almost surely, 2^20133377647 is an apocalyptic number.

20133377647 is a deficient number, since it is larger than the sum of its proper divisors (1).

20133377647 is an equidigital number, since it uses as much as digits as its factorization.

20133377647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 43.

The spelling of 20133377647 in words is "twenty billion, one hundred thirty-three million, three hundred seventy-seven thousand, six hundred forty-seven".