20114643547 has 2 divisors, whose sum is σ = 20114643548. Its totient is φ = 20114643546.

The previous prime is 20114643541. The next prime is 20114643611. The reversal of 20114643547 is 74534641102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20114643547 is a prime.

It is not a weakly prime, because it can be changed into another prime (20114643541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10057321773 + 10057321774.

It is an arithmetic number, because the mean of its divisors is an integer number (10057321774).

Almost surely, 2^20114643547 is an apocalyptic number.

20114643547 is a deficient number, since it is larger than the sum of its proper divisors (1).

20114643547 is an equidigital number, since it uses as much as digits as its factorization.

20114643547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 20114643547 in words is "twenty billion, one hundred fourteen million, six hundred forty-three thousand, five hundred forty-seven".