29972447835 has 32 divisors (see below), whose sum is σ = 52335341568. Its totient is φ = 14526597120.

The previous prime is 29972447831. The next prime is 29972447887. The reversal of 29972447835 is 53874427992.

It is not a de Polignac number, because 29972447835 - 2² = 29972447831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29972447831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 421254 + ... + 487236.

It is an arithmetic number, because the mean of its divisors is an integer number (1635479424).

Almost surely, 2^29972447835 is an apocalyptic number.

29972447835 is a deficient number, since it is larger than the sum of its proper divisors (22362893733).

29972447835 is a wasteful number, since it uses less digits than its factorization.

29972447835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68755.

The product of its digits is 30481920, while the sum is 60.

The spelling of 29972447835 in words is "twenty-nine billion, nine hundred seventy-two million, four hundred forty-seven thousand, eight hundred thirty-five".