616626061441 has 8 divisors (see below), whose sum is σ = 664291307624. Its totient is φ = 568994025600.

The previous prime is 616626061423. The next prime is 616626061459. The reversal of 616626061441 is 144160626616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (616626061423) and next prime (616626061459).

It can be written as a sum of positive squares in 4 ways, for example, as 646416 + 616625415025 = 804^2 + 785255^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-616626061441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616626061421) 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, 8264010 + ... + 8338291.

It is an arithmetic number, because the mean of its divisors is an integer number (83036413453).

Almost surely, 2^616626061441 is an apocalyptic number.

It is an amenable number.

616626061441 is a deficient number, since it is larger than the sum of its proper divisors (47665246183).

616626061441 is a wasteful number, since it uses less digits than its factorization.

616626061441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605171.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 616626061441 in words is "six hundred sixteen billion, six hundred twenty-six million, sixty-one thousand, four hundred forty-one".