29542950649 has 4 divisors (see below), whose sum is σ = 29547074164. Its totient is φ = 29538827136.

The previous prime is 29542950629. The next prime is 29542950719. The reversal of 29542950649 is 94605924592.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13658129424 + 15884821225 = 116868^2 + 126035^2 .

It is a cyclic number.

It is not a de Polignac number, because 29542950649 - 2⁹ = 29542950137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29542950649.

It is not an unprimeable number, because it can be changed into a prime (29542950629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2050992 + ... + 2065345.

It is an arithmetic number, because the mean of its divisors is an integer number (7386768541).

Almost surely, 2^29542950649 is an apocalyptic number.

It is an amenable number.

29542950649 is a deficient number, since it is larger than the sum of its proper divisors (4123515).

29542950649 is an equidigital number, since it uses as much as digits as its factorization.

29542950649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4123514.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 29542950649 in words is "twenty-nine billion, five hundred forty-two million, nine hundred fifty thousand, six hundred forty-nine".