29708742538 has 8 divisors (see below), whose sum is σ = 44957477988. Its totient is φ = 14722916544.

The previous prime is 29708742529. The next prime is 29708742541. The reversal of 29708742538 is 83524780792.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26290352449 + 3418390089 = 162143^2 + 58467^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 65727081 + ... + 65727532.

Almost surely, 2^29708742538 is an apocalyptic number.

29708742538 is a deficient number, since it is larger than the sum of its proper divisors (15248735450).

29708742538 is a wasteful number, since it uses less digits than its factorization.

29708742538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131454728.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 29708742538 in words is "twenty-nine billion, seven hundred eight million, seven hundred forty-two thousand, five hundred thirty-eight".