616705953929 has 4 divisors (see below), whose sum is σ = 664144873476. Its totient is φ = 569267034384.

The previous prime is 616705953917. The next prime is 616705954003. The reversal of 616705953929 is 929359507616.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121163167225 + 495542786704 = 348085^2 + 703948^2 .

It is a cyclic number.

It is not a de Polignac number, because 616705953929 - 2³² = 612410986633 is a prime.

It is a super-2 number, since 2×616705953929² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616705953029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23719459754 + ... + 23719459779.

It is an arithmetic number, because the mean of its divisors is an integer number (166036218369).

Almost surely, 2^616705953929 is an apocalyptic number.

It is an amenable number.

616705953929 is a deficient number, since it is larger than the sum of its proper divisors (47438919547).

616705953929 is a wasteful number, since it uses less digits than its factorization.

616705953929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47438919546.

The product of its (nonzero) digits is 27556200, while the sum is 62.

The spelling of 616705953929 in words is "six hundred sixteen billion, seven hundred five million, nine hundred fifty-three thousand, nine hundred twenty-nine".