69139199808 has 392 divisors, whose sum is σ = 242708257280. Its totient is φ = 19114030080.

The previous prime is 69139199791. The next prime is 69139199813. The reversal of 69139199808 is 80899193196.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 10120938 + ... + 10127766.

Almost surely, 2^69139199808 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 69139199808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121354128640).

69139199808 is an abundant number, since it is smaller than the sum of its proper divisors (173569057472).

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

69139199808 is an equidigital number, since it uses as much as digits as its factorization.

69139199808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6897 (or 6872 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 63.

The spelling of 69139199808 in words is "sixty-nine billion, one hundred thirty-nine million, one hundred ninety-nine thousand, eight hundred eight".