1027659131591 has 4 divisors (see below), whose sum is σ = 1063095653400. Its totient is φ = 992222609784.

The previous prime is 1027659131581. The next prime is 1027659131627. The reversal of 1027659131591 is 1951319567201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1027659131591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027659131501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17718260861 + ... + 17718260918.

It is an arithmetic number, because the mean of its divisors is an integer number (265773913350).

Almost surely, 2^{1027659131591} is an apocalyptic number.

1027659131591 is a deficient number, since it is larger than the sum of its proper divisors (35436521809).

1027659131591 is an equidigital number, since it uses as much as digits as its factorization.

1027659131591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35436521808.

The product of its (nonzero) digits is 510300, while the sum is 50.

The spelling of 1027659131591 in words is "one trillion, twenty-seven billion, six hundred fifty-nine million, one hundred thirty-one thousand, five hundred ninety-one".