29757969145 has 4 divisors (see below), whose sum is σ = 35709562980. Its totient is φ = 23806375312.

The previous prime is 29757969133. The next prime is 29757969179. The reversal of 29757969145 is 54196975792.

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 6473650681 + 23284318464 = 80459^2 + 152592^2 .

It is a cyclic number.

It is not a de Polignac number, because 29757969145 - 2¹⁷ = 29757838073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975796910 + ... + 2975796919.

It is an arithmetic number, because the mean of its divisors is an integer number (8927390745).

Almost surely, 2^29757969145 is an apocalyptic number.

It is an amenable number.

29757969145 is a deficient number, since it is larger than the sum of its proper divisors (5951593835).

29757969145 is an equidigital number, since it uses as much as digits as its factorization.

29757969145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951593834.

The product of its digits is 42865200, while the sum is 64.

The spelling of 29757969145 in words is "twenty-nine billion, seven hundred fifty-seven million, nine hundred sixty-nine thousand, one hundred forty-five".