29869781279137 has 24 divisors (see below), whose sum is σ = 30619765968480. Its totient is φ = 29137781211840.

The previous prime is 29869781279101. The next prime is 29869781279147. The reversal of 29869781279137 is 73197218796892.

It is a de Polignac number, because none of the positive numbers 2^k-29869781279137 is a prime.

It is a super-2 number, since 2×29869781279137² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29869781279147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8924342898 + ... + 8924346244.

It is an arithmetic number, because the mean of its divisors is an integer number (1275823582020).

Almost surely, 2^{29869781279137} is an apocalyptic number.

It is an amenable number.

29869781279137 is a deficient number, since it is larger than the sum of its proper divisors (749984689343).

29869781279137 is a wasteful number, since it uses less digits than its factorization.

29869781279137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173 (or 8130 counting only the distinct ones).

The product of its digits is 1152216576, while the sum is 79.

The spelling of 29869781279137 in words is "twenty-nine trillion, eight hundred sixty-nine billion, seven hundred eighty-one million, two hundred seventy-nine thousand, one hundred thirty-seven".