69879742919 has 4 divisors (see below), whose sum is σ = 79862563344. Its totient is φ = 59896922496.

The previous prime is 69879742873. The next prime is 69879742949. The reversal of 69879742919 is 91924797896.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69879742919 - 2¹² = 69879738823 is a prime.

It is a super-2 number, since 2×69879742919² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69879742949) 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 3 ways as a sum of consecutive naturals, for example, 4991410202 + ... + 4991410215.

It is an arithmetic number, because the mean of its divisors is an integer number (19965640836).

Almost surely, 2^69879742919 is an apocalyptic number.

69879742919 is a deficient number, since it is larger than the sum of its proper divisors (9982820425).

69879742919 is an equidigital number, since it uses as much as digits as its factorization.

69879742919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982820424.

The product of its digits is 123451776, while the sum is 71.

The spelling of 69879742919 in words is "sixty-nine billion, eight hundred seventy-nine million, seven hundred forty-two thousand, nine hundred nineteen".