137320740091 has 2 divisors, whose sum is σ = 137320740092. Its totient is φ = 137320740090.

The previous prime is 137320740079. The next prime is 137320740113. The reversal of 137320740091 is 190047023731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137320740091 - 2⁵ = 137320740059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137320740091.

It is not a weakly prime, because it can be changed into another prime (137320740191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68660370045 + 68660370046.

It is an arithmetic number, because the mean of its divisors is an integer number (68660370046).

Almost surely, 2^137320740091 is an apocalyptic number.

137320740091 is a deficient number, since it is larger than the sum of its proper divisors (1).

137320740091 is an equidigital number, since it uses as much as digits as its factorization.

137320740091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

The spelling of 137320740091 in words is "one hundred thirty-seven billion, three hundred twenty million, seven hundred forty thousand, ninety-one".