137511721103 has 2 divisors, whose sum is σ = 137511721104. Its totient is φ = 137511721102.

The previous prime is 137511721091. The next prime is 137511721121. The reversal of 137511721103 is 301127115731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137511721103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137511721103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137511721153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68755860551 + 68755860552.

It is an arithmetic number, because the mean of its divisors is an integer number (68755860552).

Almost surely, 2^137511721103 is an apocalyptic number.

137511721103 is a deficient number, since it is larger than the sum of its proper divisors (1).

137511721103 is an equidigital number, since it uses as much as digits as its factorization.

137511721103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

Adding to 137511721103 its reverse (301127115731), we get a palindrome (438638836834).

The spelling of 137511721103 in words is "one hundred thirty-seven billion, five hundred eleven million, seven hundred twenty-one thousand, one hundred three".