2151206506216 has 128 divisors (see below), whose sum is σ = 4377841920000. Its totient is φ = 987815761920.

The previous prime is 2151206506193. The next prime is 2151206506223. The reversal of 2151206506216 is 6126056021512.

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, 829619416 + ... + 829622008.

It is an arithmetic number, because the mean of its divisors is an integer number (34201890000).

Almost surely, 2^{2151206506216} is an apocalyptic number.

It is an amenable number.

2151206506216 is an abundant number, since it is smaller than the sum of its proper divisors (2226635413784).

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

2151206506216 is a wasteful number, since it uses less digits than its factorization.

2151206506216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927 (or 3923 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 2151206506216 in words is "two trillion, one hundred fifty-one billion, two hundred six million, five hundred six thousand, two hundred sixteen".