1029978677671 has 2 divisors, whose sum is σ = 1029978677672. Its totient is φ = 1029978677670.

The previous prime is 1029978677633. The next prime is 1029978677701. The reversal of 1029978677671 is 1767768799201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1029978677671 - 2¹³ = 1029978669479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1029978677671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1029978677171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514989338835 + 514989338836.

It is an arithmetic number, because the mean of its divisors is an integer number (514989338836).

Almost surely, 2^{1029978677671} is an apocalyptic number.

1029978677671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029978677671 is an equidigital number, since it uses as much as digits as its factorization.

1029978677671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112021056, while the sum is 70.

The spelling of 1029978677671 in words is "one trillion, twenty-nine billion, nine hundred seventy-eight million, six hundred seventy-seven thousand, six hundred seventy-one".