137761166773 has 2 divisors, whose sum is σ = 137761166774. Its totient is φ = 137761166772.

The previous prime is 137761166759. The next prime is 137761166789. The reversal of 137761166773 is 377661167731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134371365489 + 3389801284 = 366567^2 + 58222^2 .

It is a cyclic number.

It is not a de Polignac number, because 137761166773 - 2⁹ = 137761166261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137761166713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68880583386 + 68880583387.

It is an arithmetic number, because the mean of its divisors is an integer number (68880583387).

Almost surely, 2^137761166773 is an apocalyptic number.

It is an amenable number.

137761166773 is a deficient number, since it is larger than the sum of its proper divisors (1).

137761166773 is an equidigital number, since it uses as much as digits as its factorization.

137761166773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4667544, while the sum is 55.

The spelling of 137761166773 in words is "one hundred thirty-seven billion, seven hundred sixty-one million, one hundred sixty-six thousand, seven hundred seventy-three".