1612117278719 has 4 divisors (see below), whose sum is σ = 1622793552240. Its totient is φ = 1601441005200.

The previous prime is 1612117278701. The next prime is 1612117278743. The reversal of 1612117278719 is 9178727112161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612117278719 is a prime.

It is a super-2 number, since 2×1612117278719² (a number of 25 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 (1612117278749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5338136534 + ... + 5338136835.

It is an arithmetic number, because the mean of its divisors is an integer number (405698388060).

Almost surely, 2^{1612117278719} is an apocalyptic number.

1612117278719 is a deficient number, since it is larger than the sum of its proper divisors (10676273521).

1612117278719 is a wasteful number, since it uses less digits than its factorization.

1612117278719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10676273520.

The product of its digits is 592704, while the sum is 53.

The spelling of 1612117278719 in words is "one trillion, six hundred twelve billion, one hundred seventeen million, two hundred seventy-eight thousand, seven hundred nineteen".