137535440437 has 2 divisors, whose sum is σ = 137535440438. Its totient is φ = 137535440436.

The previous prime is 137535440423. The next prime is 137535440443. The reversal of 137535440437 is 734044535731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132874101361 + 4661339076 = 364519^2 + 68274^2 .

It is a cyclic number.

It is not a de Polignac number, because 137535440437 - 2¹¹ = 137535438389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137535440407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68767720218 + 68767720219.

It is an arithmetic number, because the mean of its divisors is an integer number (68767720219).

Almost surely, 2^137535440437 is an apocalyptic number.

It is an amenable number.

137535440437 is a deficient number, since it is larger than the sum of its proper divisors (1).

137535440437 is an equidigital number, since it uses as much as digits as its factorization.

137535440437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2116800, while the sum is 46.

The spelling of 137535440437 in words is "one hundred thirty-seven billion, five hundred thirty-five million, four hundred forty thousand, four hundred thirty-seven".