75681026137 has 2 divisors, whose sum is σ = 75681026138. Its totient is φ = 75681026136.

The previous prime is 75681026111. The next prime is 75681026171. The reversal of 75681026137 is 73162018657.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57247261696 + 18433764441 = 239264^2 + 135771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75681026137 is a prime.

It is not a weakly prime, because it can be changed into another prime (75681026437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37840513068 + 37840513069.

It is an arithmetic number, because the mean of its divisors is an integer number (37840513069).

Almost surely, 2^75681026137 is an apocalyptic number.

It is an amenable number.

75681026137 is a deficient number, since it is larger than the sum of its proper divisors (1).

75681026137 is an equidigital number, since it uses as much as digits as its factorization.

75681026137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 75681026137 in words is "seventy-five billion, six hundred eighty-one million, twenty-six thousand, one hundred thirty-seven".