69988090139 has 8 divisors (see below), whose sum is σ = 76415307120. Its totient is φ = 63571650400.

The previous prime is 69988090127. The next prime is 69988090157. The reversal of 69988090139 is 93109088996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69988090139 - 2⁸ = 69988089883 is a prime.

It is a super-2 number, since 2×69988090139² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69988090169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680724 + ... + 2706705.

It is an arithmetic number, because the mean of its divisors is an integer number (9551913390).

Almost surely, 2^69988090139 is an apocalyptic number.

69988090139 is a deficient number, since it is larger than the sum of its proper divisors (6427216981).

69988090139 is a wasteful number, since it uses less digits than its factorization.

69988090139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388621.

The product of its (nonzero) digits is 7558272, while the sum is 62.

The spelling of 69988090139 in words is "sixty-nine billion, nine hundred eighty-eight million, ninety thousand, one hundred thirty-nine".