69781870424 has 16 divisors (see below), whose sum is σ = 149532579600. Its totient is φ = 29906515872.

The previous prime is 69781870421. The next prime is 69781870439. The reversal of 69781870424 is 42407818796.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 1246104829 = 69781870424 / (6 + 9 + 7 + 8 + 1 + 8 + 7 + 0 + 4 + 2 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 69781870424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69781870421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623052359 + ... + 623052470.

It is an arithmetic number, because the mean of its divisors is an integer number (9345786225).

Almost surely, 2^69781870424 is an apocalyptic number.

It is an amenable number.

69781870424 is an abundant number, since it is smaller than the sum of its proper divisors (79750709176).

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

69781870424 is a wasteful number, since it uses less digits than its factorization.

69781870424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246104842 (or 1246104838 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 69781870424 in words is "sixty-nine billion, seven hundred eighty-one million, eight hundred seventy thousand, four hundred twenty-four".