69878999987801 has 16 divisors (see below), whose sum is σ = 73107188098560. Its totient is φ = 66723405477120.

The previous prime is 69878999987791. The next prime is 69878999987807. The reversal of 69878999987801 is 10878999987896.

It is a cyclic number.

It is not a de Polignac number, because 69878999987801 - 2¹⁰ = 69878999986777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69878999987807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330796925 + ... + 331008101.

It is an arithmetic number, because the mean of its divisors is an integer number (4569199256160).

Almost surely, 2^{69878999987801} is an apocalyptic number.

It is an amenable number.

69878999987801 is a deficient number, since it is larger than the sum of its proper divisors (3228188110759).

69878999987801 is a wasteful number, since it uses less digits than its factorization.

69878999987801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382984.

The product of its (nonzero) digits is 71108222976, while the sum is 98.

The spelling of 69878999987801 in words is "sixty-nine trillion, eight hundred seventy-eight billion, nine hundred ninety-nine million, nine hundred eighty-seven thousand, eight hundred one".