29994128232487 has 4 divisors (see below), whose sum is σ = 29994193543120. Its totient is φ = 29994062921856.

The previous prime is 29994128232463. The next prime is 29994128232521. The reversal of 29994128232487 is 78423282149992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29994128232487 - 2⁷ = 29994128232359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29994128242487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31961523 + ... + 32886580.

It is an arithmetic number, because the mean of its divisors is an integer number (7498548385780).

Almost surely, 2^{29994128232487} is an apocalyptic number.

29994128232487 is a deficient number, since it is larger than the sum of its proper divisors (65310633).

29994128232487 is an equidigital number, since it uses as much as digits as its factorization.

29994128232487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65310632.

The product of its digits is 250822656, while the sum is 70.

The spelling of 29994128232487 in words is "twenty-nine trillion, nine hundred ninety-four billion, one hundred twenty-eight million, two hundred thirty-two thousand, four hundred eighty-seven".