2151045169506 has 24 divisors (see below), whose sum is σ = 4863232558080. Its totient is φ = 685840488696.

The previous prime is 2151045169387. The next prime is 2151045169517. The reversal of 2151045169506 is 6059615401512.

2151045169506 is a `hidden beast` number, since 2 + 1 + 510 + 45 + 1 + 6 + 95 + 0 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2597880226 + ... + 2597881053.

It is an arithmetic number, because the mean of its divisors is an integer number (202634689920).

Almost surely, 2^{2151045169506} is an apocalyptic number.

2151045169506 is an abundant number, since it is smaller than the sum of its proper divisors (2712187388574).

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

2151045169506 is a wasteful number, since it uses less digits than its factorization.

2151045169506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5195761310 (or 5195761307 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 2151045169506 in words is "two trillion, one hundred fifty-one billion, forty-five million, one hundred sixty-nine thousand, five hundred six".