2151516066456 has 32 divisors (see below), whose sum is σ = 5414889438000. Its totient is φ = 712358785920.

The previous prime is 2151516066451. The next prime is 2151516066463. The reversal of 2151516066456 is 6546606151512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151516066451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300823615 + ... + 300830766.

Almost surely, 2^{2151516066456} is an apocalyptic number.

It is an amenable number.

2151516066456 is an abundant number, since it is smaller than the sum of its proper divisors (3263373371544).

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

2151516066456 is a wasteful number, since it uses less digits than its factorization.

2151516066456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601654539 (or 601654535 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 2151516066456 in words is "two trillion, one hundred fifty-one billion, five hundred sixteen million, sixty-six thousand, four hundred fifty-six".