1020775731671 has 8 divisors (see below), whose sum is σ = 1074609646080. Its totient is φ = 966952704888.

The previous prime is 1020775731667. The next prime is 1020775731733. The reversal of 1020775731671 is 1761375770201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020775731671 - 2² = 1020775731667 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 (1020775731631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529101 + ... + 2904806.

It is an arithmetic number, because the mean of its divisors is an integer number (134326205760).

Almost surely, 2^{1020775731671} is an apocalyptic number.

1020775731671 is a deficient number, since it is larger than the sum of its proper divisors (53833914409).

1020775731671 is an equidigital number, since it uses as much as digits as its factorization.

1020775731671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5443813.

The product of its (nonzero) digits is 432180, while the sum is 47.

The spelling of 1020775731671 in words is "one trillion, twenty billion, seven hundred seventy-five million, seven hundred thirty-one thousand, six hundred seventy-one".