20375275747 has 2 divisors, whose sum is σ = 20375275748. Its totient is φ = 20375275746.

The previous prime is 20375275691. The next prime is 20375275759. The reversal of 20375275747 is 74757257302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20375275747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20375275747.

It is not a weakly prime, because it can be changed into another prime (20375275447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10187637873 + 10187637874.

It is an arithmetic number, because the mean of its divisors is an integer number (10187637874).

Almost surely, 2^20375275747 is an apocalyptic number.

20375275747 is a deficient number, since it is larger than the sum of its proper divisors (1).

20375275747 is an equidigital number, since it uses as much as digits as its factorization.

20375275747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2881200, while the sum is 49.

The spelling of 20375275747 in words is "twenty billion, three hundred seventy-five million, two hundred seventy-five thousand, seven hundred forty-seven".