820429634111 has 8 divisors (see below), whose sum is σ = 856112578560. Its totient is φ = 784747697272.

The previous prime is 820429634107. The next prime is 820429634153. The reversal of 820429634111 is 111436924028.

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 820429634111 - 2² = 820429634107 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 (820429631111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750850 + ... + 2169408.

It is an arithmetic number, because the mean of its divisors is an integer number (107014072320).

Almost surely, 2^820429634111 is an apocalyptic number.

820429634111 is a deficient number, since it is larger than the sum of its proper divisors (35682944449).

820429634111 is a wasteful number, since it uses less digits than its factorization.

820429634111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503805.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 820429634111 in words is "eight hundred twenty billion, four hundred twenty-nine million, six hundred thirty-four thousand, one hundred eleven".