1550343102691 has 2 divisors, whose sum is σ = 1550343102692. Its totient is φ = 1550343102690.

The previous prime is 1550343102661. The next prime is 1550343102697. The reversal of 1550343102691 is 1962013430551.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1550343102691 - 2¹³ = 1550343094499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1550343102697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775171551345 + 775171551346.

It is an arithmetic number, because the mean of its divisors is an integer number (775171551346).

Almost surely, 2^{1550343102691} is an apocalyptic number.

1550343102691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550343102691 is an equidigital number, since it uses as much as digits as its factorization.

1550343102691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 1550343102691 in words is "one trillion, five hundred fifty billion, three hundred forty-three million, one hundred two thousand, six hundred ninety-one".