137790150581 has 2 divisors, whose sum is σ = 137790150582. Its totient is φ = 137790150580.

The previous prime is 137790150527. The next prime is 137790150689. The reversal of 137790150581 is 185051097731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106563726481 + 31226424100 = 326441^2 + 176710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137790150581 is a prime.

It is a super-2 number, since 2×137790150581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137790153581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68895075290 + 68895075291.

It is an arithmetic number, because the mean of its divisors is an integer number (68895075291).

Almost surely, 2^137790150581 is an apocalyptic number.

It is an amenable number.

137790150581 is a deficient number, since it is larger than the sum of its proper divisors (1).

137790150581 is an equidigital number, since it uses as much as digits as its factorization.

137790150581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 47.

The spelling of 137790150581 in words is "one hundred thirty-seven billion, seven hundred ninety million, one hundred fifty thousand, five hundred eighty-one".