29953768895989 has 2 divisors, whose sum is σ = 29953768895990. Its totient is φ = 29953768895988.

The previous prime is 29953768895927. The next prime is 29953768896017. The reversal of 29953768895989 is 98959886735992.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26210867319025 + 3742901576964 = 5119655^2 + 1934658^2 .

It is a cyclic number.

It is not a de Polignac number, because 29953768895989 - 2¹¹ = 29953768893941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29953768895989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29953768895189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14976884447994 + 14976884447995.

It is an arithmetic number, because the mean of its divisors is an integer number (14976884447995).

Almost surely, 2^{29953768895989} is an apocalyptic number.

It is an amenable number.

29953768895989 is a deficient number, since it is larger than the sum of its proper divisors (1).

29953768895989 is an equidigital number, since it uses as much as digits as its factorization.

29953768895989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190468454400, while the sum is 97.

The spelling of 29953768895989 in words is "twenty-nine trillion, nine hundred fifty-three billion, seven hundred sixty-eight million, eight hundred ninety-five thousand, nine hundred eighty-nine".