69840356768 has 96 divisors (see below), whose sum is σ = 171547278336. Its totient is φ = 27250587648.

The previous prime is 69840356767. The next prime is 69840356797. The reversal of 69840356768 is 86765304896.

It is a self number, because there is not a number n which added to its sum of digits gives 69840356768.

It is not an unprimeable number, because it can be changed into a prime (69840356767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48305 + ... + 376847.

It is an arithmetic number, because the mean of its divisors is an integer number (1786950816).

Almost surely, 2^69840356768 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 69840356768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85773639168).

69840356768 is an abundant number, since it is smaller than the sum of its proper divisors (101706921568).

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

69840356768 is a wasteful number, since it uses less digits than its factorization.

69840356768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328646 (or 328638 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 69840356768 in words is "sixty-nine billion, eight hundred forty million, three hundred fifty-six thousand, seven hundred sixty-eight".