69969148128 has 144 divisors (see below), whose sum is σ = 219302109936. Its totient is φ = 20984094720.

The previous prime is 69969148127. The next prime is 69969148129. The reversal of 69969148128 is 82184196996.

69969148128 is a `hidden beast` number, since 6 + 99 + 69 + 1 + 481 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (69969148127) and next prime (69969148129).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69969148127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193450 + ... + 421142.

It is an arithmetic number, because the mean of its divisors is an integer number (1522931319).

Almost surely, 2^69969148128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69969148128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109651054968).

69969148128 is an abundant number, since it is smaller than the sum of its proper divisors (149332961808).

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

69969148128 is a wasteful number, since it uses less digits than its factorization.

69969148128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227817 (or 227806 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The spelling of 69969148128 in words is "sixty-nine billion, nine hundred sixty-nine million, one hundred forty-eight thousand, one hundred twenty-eight".