2720157137 has 2 divisors, whose sum is σ = 2720157138. Its totient is φ = 2720157136.

The previous prime is 2720157071. The next prime is 2720157163. The reversal of 2720157137 is 7317510272.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2719726801 + 430336 = 52151^2 + 656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2720157137 - 2¹⁰ = 2720156113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2720157097 and 2720157106.

It is not a weakly prime, because it can be changed into another prime (2720117137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360078568 + 1360078569.

It is an arithmetic number, because the mean of its divisors is an integer number (1360078569).

Almost surely, 2^2720157137 is an apocalyptic number.

It is an amenable number.

2720157137 is a deficient number, since it is larger than the sum of its proper divisors (1).

2720157137 is an equidigital number, since it uses as much as digits as its factorization.

2720157137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 2720157137 is about 52155.1257020822. The cubic root of 2720157137 is about 1395.9332898133.

The spelling of 2720157137 in words is "two billion, seven hundred twenty million, one hundred fifty-seven thousand, one hundred thirty-seven".