69306393840 has 80 divisors (see below), whose sum is σ = 214948209696. Its totient is φ = 18473241600.

The previous prime is 69306393839. The next prime is 69306393889. The reversal of 69306393840 is 4839360396.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468030 + ... + 598050.

Almost surely, 2^69306393840 is an apocalyptic number.

69306393840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69306393840 is an abundant number, since it is smaller than the sum of its proper divisors (145641815856).

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

69306393840 is a wasteful number, since it uses less digits than its factorization.

69306393840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132258 (or 132252 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 69306393840 in words is "sixty-nine billion, three hundred six million, three hundred ninety-three thousand, eight hundred forty".