5619123279961 has 3 divisors (see below), whose sum is σ = 5619125650431. Its totient is φ = 5619120909492.

The previous prime is 5619123279877. The next prime is 5619123279971. The reversal of 5619123279961 is 1699723219165.

It is a happy number.

The square root of 5619123279961 is 2370469.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 5542582524361 + 76540755600 = 2354269^2 + 276660^2 .

It is not a de Polignac number, because 5619123279961 - 2³⁵ = 5584763541593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5619123279961.

It is not an unprimeable number, because it can be changed into a prime (5619123279971) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1185235 + ... + 3555703.

It is an arithmetic number, because the mean of its divisors is an integer number (1873041883477).

Almost surely, 2^{5619123279961} is an apocalyptic number.

5619123279961 is the 2370469-th square number.

5619123279961 is the 1185235-th centered octagonal number.

It is an amenable number.

5619123279961 is a deficient number, since it is larger than the sum of its proper divisors (2370470).

5619123279961 is an frugal number, since it uses more digits than its factorization.

5619123279961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4740938 (or 2370469 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 61.

The spelling of 5619123279961 in words is "five trillion, six hundred nineteen billion, one hundred twenty-three million, two hundred seventy-nine thousand, nine hundred sixty-one".