2139567281769 has 8 divisors (see below), whose sum is σ = 2853014424480. Its totient is φ = 1426249163456.

The previous prime is 2139567281723. The next prime is 2139567281777. The reversal of 2139567281769 is 9671827659312.

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 a de Polignac number, because none of the positive numbers 2^k-2139567281769 is a prime.

It is a super-2 number, since 2×2139567281769² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2139567285769) 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, 32217399 + ... + 32283740.

It is an arithmetic number, because the mean of its divisors is an integer number (356626803060).

Almost surely, 2^{2139567281769} is an apocalyptic number.

It is an amenable number.

2139567281769 is a deficient number, since it is larger than the sum of its proper divisors (713447142711).

2139567281769 is a wasteful number, since it uses less digits than its factorization.

2139567281769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64512199.

The product of its digits is 68584320, while the sum is 66.

The spelling of 2139567281769 in words is "two trillion, one hundred thirty-nine billion, five hundred sixty-seven million, two hundred eighty-one thousand, seven hundred sixty-nine".