69398235940 has 72 divisors (see below), whose sum is σ = 161989866360. Its totient is φ = 24952097280.

The previous prime is 69398235923. The next prime is 69398235971. The reversal of 69398235940 is 4953289396.

It can be written as a sum of positive squares in 4 ways, for example, as 1445216256 + 67953019684 = 38016^2 + 260678^2 .

It is a super-2 number, since 2×69398235940² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54274 + ... + 376486.

It is an arithmetic number, because the mean of its divisors is an integer number (2249859255).

Almost surely, 2^69398235940 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 69398235940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80994933180).

69398235940 is an abundant number, since it is smaller than the sum of its proper divisors (92591630420).

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

69398235940 is a wasteful number, since it uses less digits than its factorization.

69398235940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322333 (or 322320 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 69398235940 in words is "sixty-nine billion, three hundred ninety-eight million, two hundred thirty-five thousand, nine hundred forty".