616615992002 has 16 divisors (see below), whose sum is σ = 925613400600. Its totient is φ = 308078254080.

The previous prime is 616615991983. The next prime is 616615992023. The reversal of 616615992002 is 200299516616.

It is a Cunningham number, because it is equal to 785249²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 455396878561 + 161219113441 = 674831^2 + 401521^2 .

It is a super-2 number, since 2×616615992002² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29621774 + ... + 29642582.

Almost surely, 2^616615992002 is an apocalyptic number.

616615992002 is a deficient number, since it is larger than the sum of its proper divisors (308997408598).

616615992002 is a wasteful number, since it uses less digits than its factorization.

616615992002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31141.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 616615992002 in words is "six hundred sixteen billion, six hundred fifteen million, nine hundred ninety-two thousand, two".