137658940989707 has 2 divisors, whose sum is σ = 137658940989708. Its totient is φ = 137658940989706.

The previous prime is 137658940989673. The next prime is 137658940989737. The reversal of 137658940989707 is 707989049856731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137658940989707 is a prime.

It is not a weakly prime, because it can be changed into another prime (137658940989737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68829470494853 + 68829470494854.

It is an arithmetic number, because the mean of its divisors is an integer number (68829470494854).

Almost surely, 2^{137658940989707} is an apocalyptic number.

137658940989707 is a deficient number, since it is larger than the sum of its proper divisors (1).

137658940989707 is an equidigital number, since it uses as much as digits as its factorization.

137658940989707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5761082880, while the sum is 83.

The spelling of 137658940989707 in words is "one hundred thirty-seven trillion, six hundred fifty-eight billion, nine hundred forty million, nine hundred eighty-nine thousand, seven hundred seven".