5211616566 has 32 divisors (see below), whose sum is σ = 11238232320. Its totient is φ = 1601686944.

The previous prime is 5211616561. The next prime is 5211616583. The reversal of 5211616566 is 6656161125.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5211616561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28111 + ... + 105893.

It is an arithmetic number, because the mean of its divisors is an integer number (351194760).

Almost surely, 2^5211616566 is an apocalyptic number.

5211616566 is an abundant number, since it is smaller than the sum of its proper divisors (6026615754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5211616566 is a wasteful number, since it uses less digits than its factorization.

5211616566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78660.

The product of its digits is 64800, while the sum is 39.

The square root of 5211616566 is about 72191.5269681976. The cubic root of 5211616566 is about 1733.7673439896.

The spelling of 5211616566 in words is "five billion, two hundred eleven million, six hundred sixteen thousand, five hundred sixty-six".