69426393988608 has 280 divisors, whose sum is σ = 210486527015688. Its totient is φ = 22863300268032.

The previous prime is 69426393988459. The next prime is 69426393988649. The reversal of 69426393988608 is 80688939362496.

69426393988608 is a `hidden beast` number, since 6 + 94 + 2 + 6 + 393 + 9 + 88 + 60 + 8 = 666.

It is a super-2 number, since 2×69426393988608² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 29859066 + ... + 32100102.

Almost surely, 2^{69426393988608} 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 69426393988608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105243263507844).

69426393988608 is an abundant number, since it is smaller than the sum of its proper divisors (141060133027080).

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

69426393988608 is an frugal number, since it uses more digits than its factorization.

69426393988608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241156 (or 2241125 counting only the distinct ones).

The product of its (nonzero) digits is 5804752896, while the sum is 81.

The spelling of 69426393988608 in words is "sixty-nine trillion, four hundred twenty-six billion, three hundred ninety-three million, nine hundred eighty-eight thousand, six hundred eight".