29942155499 has 12 divisors (see below), whose sum is σ = 32136633720. Its totient is φ = 27885448800.

The previous prime is 29942155487. The next prime is 29942155511. The reversal of 29942155499 is 99455124992.

It is an interprime number because it is at equal distance from previous prime (29942155487) and next prime (29942155511).

It is a de Polignac number, because none of the positive numbers 2^k-29942155499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29942155459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681602 + ... + 724199.

It is an arithmetic number, because the mean of its divisors is an integer number (2678052810).

Almost surely, 2^29942155499 is an apocalyptic number.

29942155499 is a deficient number, since it is larger than the sum of its proper divisors (2194478221).

29942155499 is a wasteful number, since it uses less digits than its factorization.

29942155499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405898 (or 1405879 counting only the distinct ones).

The product of its digits is 10497600, while the sum is 59.

The spelling of 29942155499 in words is "twenty-nine billion, nine hundred forty-two million, one hundred fifty-five thousand, four hundred ninety-nine".