6516206002061 has 4 divisors (see below), whose sum is σ = 7447092573792. Its totient is φ = 5585319430332.

The previous prime is 6516206002049. The next prime is 6516206002063. The reversal of 6516206002061 is 1602006026156.

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 6516206002061 - 2⁶ = 6516206001997 is a prime.

It is a super-2 number, since 2×6516206002061² (a number of 26 digits) contains 22 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 (6516206002063) 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, 465443285855 + ... + 465443285868.

It is an arithmetic number, because the mean of its divisors is an integer number (1861773143448).

Almost surely, 2^{6516206002061} is an apocalyptic number.

It is an amenable number.

6516206002061 is a deficient number, since it is larger than the sum of its proper divisors (930886571731).

6516206002061 is an equidigital number, since it uses as much as digits as its factorization.

6516206002061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930886571730.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 6516206002061 in words is "six trillion, five hundred sixteen billion, two hundred six million, two thousand, sixty-one".