69487068816 has 135 divisors (see below), whose sum is σ = 213860385193. Its totient is φ = 21046143360.

The previous prime is 69487068797. The next prime is 69487068817. The reversal of 69487068816 is 61886078496.

The square root of 69487068816 is 263604.

It is a perfect power (a square), and thus also a powerful number.

69487068816 is a `hidden beast` number, since 69 + 487 + 0 + 6 + 88 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1728896400 + 67758172416 = 41580^2 + 260304^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69487068817) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 34794730 + ... + 34796726.

Almost surely, 2^69487068816 is an apocalyptic number.

69487068816 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

69487068816 is the 263604-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69487068816

69487068816 is an abundant number, since it is smaller than the sum of its proper divisors (144373316377).

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

69487068816 is a wasteful number, since it uses less digits than its factorization.

69487068816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030 (or 2013 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 69487068816 in words is "sixty-nine billion, four hundred eighty-seven million, sixty-eight thousand, eight hundred sixteen".