2621271516 has 12 divisors (see below), whose sum is σ = 6116300232. Its totient is φ = 873757168.

The previous prime is 2621271493. The next prime is 2621271539. The reversal of 2621271516 is 6151721262.

It is an interprime number because it is at equal distance from previous prime (2621271493) and next prime (2621271539).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109219635 + ... + 109219658.

It is an arithmetic number, because the mean of its divisors is an integer number (509691686).

Almost surely, 2^2621271516 is an apocalyptic number.

It is an amenable number.

2621271516 is an abundant number, since it is smaller than the sum of its proper divisors (3495028716).

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

2621271516 is a wasteful number, since it uses less digits than its factorization.

2621271516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218439300 (or 218439298 counting only the distinct ones).

The product of its digits is 10080, while the sum is 33.

The square root of 2621271516 is about 51198.3546219993. The cubic root of 2621271516 is about 1378.8086609668.

Adding to 2621271516 its reverse (6151721262), we get a palindrome (8772992778).

The spelling of 2621271516 in words is "two billion, six hundred twenty-one million, two hundred seventy-one thousand, five hundred sixteen".