29942155497 has 8 divisors (see below), whose sum is σ = 39929539680. Its totient is φ = 19958104160.

The previous prime is 29942155487. The next prime is 29942155511. The reversal of 29942155497 is 79455124992.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 29942155497 - 2²⁴ = 29925378281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29942155487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812172 + ... + 848237.

It is an arithmetic number, because the mean of its divisors is an integer number (4991192460).

Almost surely, 2^29942155497 is an apocalyptic number.

It is an amenable number.

29942155497 is a deficient number, since it is larger than the sum of its proper divisors (9987384183).

29942155497 is a wasteful number, since it uses less digits than its factorization.

29942155497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666423.

The product of its digits is 8164800, while the sum is 57.

The spelling of 29942155497 in words is "twenty-nine billion, nine hundred forty-two million, one hundred fifty-five thousand, four hundred ninety-seven".