2139456673969 has 8 divisors (see below), whose sum is σ = 2175411334208. Its totient is φ = 2103530452560.

The previous prime is 2139456673967. The next prime is 2139456673973. The reversal of 2139456673969 is 9693766549312.

It is a happy number.

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 2139456673969 - 2¹ = 2139456673967 is a prime.

It is a super-2 number, since 2×2139456673969² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2139456673898 and 2139456673907.

It is not an unprimeable number, because it can be changed into a prime (2139456673967) 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, 6957957 + ... + 7258930.

It is an arithmetic number, because the mean of its divisors is an integer number (271926416776).

Almost surely, 2^{2139456673969} is an apocalyptic number.

It is an amenable number.

2139456673969 is a deficient number, since it is larger than the sum of its proper divisors (35954660239).

2139456673969 is a wasteful number, since it uses less digits than its factorization.

2139456673969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14219415.

The product of its digits is 396809280, while the sum is 70.

The spelling of 2139456673969 in words is "two trillion, one hundred thirty-nine billion, four hundred fifty-six million, six hundred seventy-three thousand, nine hundred sixty-nine".