69231964818 has 64 divisors (see below), whose sum is σ = 146427494400. Its totient is φ = 21761550720.

The previous prime is 69231964777. The next prime is 69231964861. The reversal of 69231964818 is 81846913296.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 47063823 + ... + 47065293.

It is an arithmetic number, because the mean of its divisors is an integer number (2287929600).

Almost surely, 2^69231964818 is an apocalyptic number.

69231964818 is an abundant number, since it is smaller than the sum of its proper divisors (77195529582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69231964818 is a wasteful number, since it uses less digits than its factorization.

69231964818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127.

The product of its digits is 4478976, while the sum is 57.

The spelling of 69231964818 in words is "sixty-nine billion, two hundred thirty-one million, nine hundred sixty-four thousand, eight hundred eighteen".