616556331212101 has 4 divisors (see below), whose sum is σ = 704635807099552. Its totient is φ = 528476855324652.

The previous prime is 616556331212069. The next prime is 616556331212111. The reversal of 616556331212101 is 101212133655616.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 616556331212101 - 2⁵ = 616556331212069 is a prime.

It is a super-3 number, since 3×616556331212101³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616556331212111) 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, 44039737943715 + ... + 44039737943728.

It is an arithmetic number, because the mean of its divisors is an integer number (176158951774888).

Almost surely, 2^{616556331212101} is an apocalyptic number.

It is an amenable number.

616556331212101 is a deficient number, since it is larger than the sum of its proper divisors (88079475887451).

616556331212101 is an equidigital number, since it uses as much as digits as its factorization.

616556331212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88079475887450.

The product of its (nonzero) digits is 194400, while the sum is 43.

Adding to 616556331212101 its reverse (101212133655616), we get a palindrome (717768464867717).

The spelling of 616556331212101 in words is "six hundred sixteen trillion, five hundred fifty-six billion, three hundred thirty-one million, two hundred twelve thousand, one hundred one".