69408409920 has 224 divisors, whose sum is σ = 225813640320. Its totient is φ = 18055864320.

The previous prime is 69408409877. The next prime is 69408409943. The reversal of 69408409920 is 2990480496.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9103710 + ... + 9111330.

Almost surely, 2^69408409920 is an apocalyptic number.

69408409920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69408409920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112906820160).

69408409920 is an abundant number, since it is smaller than the sum of its proper divisors (156405230400).

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

69408409920 is a wasteful number, since it uses less digits than its factorization.

69408409920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873 (or 7863 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 69408409920 in words is "sixty-nine billion, four hundred eight million, four hundred nine thousand, nine hundred twenty".