137640490387 has 2 divisors, whose sum is σ = 137640490388. Its totient is φ = 137640490386.

The previous prime is 137640490357. The next prime is 137640490397. The reversal of 137640490387 is 783094046731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137640490387 - 2³⁵ = 103280752019 is a prime.

It is not a weakly prime, because it can be changed into another prime (137640490357) 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, 68820245193 + 68820245194.

It is an arithmetic number, because the mean of its divisors is an integer number (68820245194).

Almost surely, 2^137640490387 is an apocalyptic number.

137640490387 is a deficient number, since it is larger than the sum of its proper divisors (1).

137640490387 is an equidigital number, since it uses as much as digits as its factorization.

137640490387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 137640490387 in words is "one hundred thirty-seven billion, six hundred forty million, four hundred ninety thousand, three hundred eighty-seven".