69729806149 has 2 divisors, whose sum is σ = 69729806150. Its totient is φ = 69729806148.

The previous prime is 69729806101. The next prime is 69729806173. The reversal of 69729806149 is 94160892796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37444185025 + 32285621124 = 193505^2 + 179682^2 .

It is a cyclic number.

It is not a de Polignac number, because 69729806149 - 2⁹ = 69729805637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69729806749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34864903074 + 34864903075.

It is an arithmetic number, because the mean of its divisors is an integer number (34864903075).

Almost surely, 2^69729806149 is an apocalyptic number.

It is an amenable number.

69729806149 is a deficient number, since it is larger than the sum of its proper divisors (1).

69729806149 is an equidigital number, since it uses as much as digits as its factorization.

69729806149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 69729806149 in words is "sixty-nine billion, seven hundred twenty-nine million, eight hundred six thousand, one hundred forty-nine".