69340409978 has 24 divisors (see below), whose sum is σ = 125454838752. Its totient is φ = 28153247112.

The previous prime is 69340409977. The next prime is 69340410001. The reversal of 69340409978 is 87990404396.

It is not an unprimeable number, because it can be changed into a prime (69340409977) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 6854900 + ... + 6865007.

It is an arithmetic number, because the mean of its divisors is an integer number (5227284948).

Almost surely, 2^69340409978 is an apocalyptic number.

69340409978 is a deficient number, since it is larger than the sum of its proper divisors (56114428774).

69340409978 is a wasteful number, since it uses less digits than its factorization.

69340409978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13719954 (or 13719935 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 69340409978 in words is "sixty-nine billion, three hundred forty million, four hundred nine thousand, nine hundred seventy-eight".