29351978137 has 2 divisors, whose sum is σ = 29351978138. Its totient is φ = 29351978136.

The previous prime is 29351978087. The next prime is 29351978203. The reversal of 29351978137 is 73187915392.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29135417481 + 216560656 = 170691^2 + 14716^2 .

It is a cyclic number.

It is not a de Polignac number, because 29351978137 - 2¹¹ = 29351976089 is a prime.

It is not a weakly prime, because it can be changed into another prime (29351978737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14675989068 + 14675989069.

It is an arithmetic number, because the mean of its divisors is an integer number (14675989069).

Almost surely, 2^29351978137 is an apocalyptic number.

It is an amenable number.

29351978137 is a deficient number, since it is larger than the sum of its proper divisors (1).

29351978137 is an equidigital number, since it uses as much as digits as its factorization.

29351978137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2857680, while the sum is 55.

The spelling of 29351978137 in words is "twenty-nine billion, three hundred fifty-one million, nine hundred seventy-eight thousand, one hundred thirty-seven".