29959019781953 has 2 divisors, whose sum is σ = 29959019781954. Its totient is φ = 29959019781952.

The previous prime is 29959019781949. The next prime is 29959019781959. The reversal of 29959019781953 is 35918791095992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28998408090289 + 960611691664 = 5385017^2 + 980108^2 .

It is a cyclic number.

It is not a de Polignac number, because 29959019781953 - 2² = 29959019781949 is a prime.

It is not a weakly prime, because it can be changed into another prime (29959019781959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14979509890976 + 14979509890977.

It is an arithmetic number, because the mean of its divisors is an integer number (14979509890977).

Almost surely, 2^{29959019781953} is an apocalyptic number.

It is an amenable number.

29959019781953 is a deficient number, since it is larger than the sum of its proper divisors (1).

29959019781953 is an equidigital number, since it uses as much as digits as its factorization.

29959019781953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 496011600, while the sum is 77.

The spelling of 29959019781953 in words is "twenty-nine trillion, nine hundred fifty-nine billion, nineteen million, seven hundred eighty-one thousand, nine hundred fifty-three".