2620161216 has 224 divisors, whose sum is σ = 8005754880. Its totient is φ = 839642112.

The previous prime is 2620161151. The next prime is 2620161221. The reversal of 2620161216 is 6121610262.

2620161216 is a `hidden beast` number, since 2 + 620 + 16 + 1 + 21 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2620161216.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6840961 + ... + 6841343.

Almost surely, 2^2620161216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2620161216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4002877440).

2620161216 is an abundant number, since it is smaller than the sum of its proper divisors (5385593664).

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

2620161216 is a wasteful number, since it uses less digits than its factorization.

2620161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 2620161216 is about 51187.5103516473. The cubic root of 2620161216 is about 1378.6139580722.

Adding to 2620161216 its reverse (6121610262), we get a palindrome (8741771478).

The spelling of 2620161216 in words is "two billion, six hundred twenty million, one hundred sixty-one thousand, two hundred sixteen".