69264784475820 has 72 divisors (see below), whose sum is σ = 210106698459840. Its totient is φ = 18470299841280.

The previous prime is 69264784475807. The next prime is 69264784475837. The reversal of 69264784475820 is 2857448746296.

69264784475820 is a `hidden beast` number, since 6 + 9 + 2 + 6 + 4 + 78 + 4 + 475 + 82 + 0 = 666.

It is a super-2 number, since 2×69264784475820² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7656496 + ... + 14041064.

It is an arithmetic number, because the mean of its divisors is an integer number (2918148589720).

Almost surely, 2^{69264784475820} is an apocalyptic number.

69264784475820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69264784475820 is an abundant number, since it is smaller than the sum of its proper divisors (140841913984020).

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

69264784475820 is a wasteful number, since it uses less digits than its factorization.

69264784475820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6444855 (or 6444850 counting only the distinct ones).

The product of its (nonzero) digits is 1300561920, while the sum is 72.

The spelling of 69264784475820 in words is "sixty-nine trillion, two hundred sixty-four billion, seven hundred eighty-four million, four hundred seventy-five thousand, eight hundred twenty".