2139247511 has 2 divisors, whose sum is σ = 2139247512. Its totient is φ = 2139247510.

The previous prime is 2139247499. The next prime is 2139247573. The reversal of 2139247511 is 1157429312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2139247511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2139247711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1069623755 + 1069623756.

It is an arithmetic number, because the mean of its divisors is an integer number (1069623756).

Almost surely, 2^2139247511 is an apocalyptic number.

2139247511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2139247511 is an equidigital number, since it uses as much as digits as its factorization.

2139247511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 2139247511 is about 46252.0000756724. Note that the first 4 decimals coincide. The cubic root of 2139247511 is about 1288.5076809830.

The spelling of 2139247511 in words is "two billion, one hundred thirty-nine million, two hundred forty-seven thousand, five hundred eleven".