616351210061 has 12 divisors (see below), whose sum is σ = 665837171040. Its totient is φ = 570263117760.

The previous prime is 616351210003. The next prime is 616351210127. The reversal of 616351210061 is 160012153616.

It is not a de Polignac number, because 616351210061 - 2³⁴ = 599171340877 is a prime.

It is a super-4 number, since 4×616351210061⁴ (a number of 48 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616351210561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18056705 + ... + 18090806.

It is an arithmetic number, because the mean of its divisors is an integer number (55486430920).

Almost surely, 2^616351210061 is an apocalyptic number.

It is an amenable number.

616351210061 is a deficient number, since it is larger than the sum of its proper divisors (49485960979).

616351210061 is a wasteful number, since it uses less digits than its factorization.

616351210061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36147604 (or 36147587 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 616351210061 its reverse (160012153616), we get a palindrome (776363363677).

The spelling of 616351210061 in words is "six hundred sixteen billion, three hundred fifty-one million, two hundred ten thousand, sixty-one".