29978940135 has 64 divisors (see below), whose sum is σ = 50573905920. Its totient is φ = 15144192000.

The previous prime is 29978940133. The next prime is 29978940151. The reversal of 29978940135 is 53104987992.

It is not a de Polignac number, because 29978940135 - 2¹ = 29978940133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29978940133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5982511 + ... + 5987519.

It is an arithmetic number, because the mean of its divisors is an integer number (790217280).

Almost surely, 2^29978940135 is an apocalyptic number.

29978940135 is a deficient number, since it is larger than the sum of its proper divisors (20594965785).

29978940135 is a wasteful number, since it uses less digits than its factorization.

29978940135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320.

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 29978940135 in words is "twenty-nine billion, nine hundred seventy-eight million, nine hundred forty thousand, one hundred thirty-five".