21500001350514 has 24 divisors (see below), whose sum is σ = 46584484172460. Its totient is φ = 7166490514848.

The previous prime is 21500001350461. The next prime is 21500001350533. The reversal of 21500001350514 is 41505310000512.

21500001350514 is a `hidden beast` number, since 2 + 15 + 0 + 0 + 0 + 0 + 135 + 0 + 514 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18494171235225 + 3005830115289 = 4300485^2 + 1733733^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13965049 + ... + 15427980.

Almost surely, 2^{21500001350514} is an apocalyptic number.

21500001350514 is an abundant number, since it is smaller than the sum of its proper divisors (25084482821946).

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

21500001350514 is a wasteful number, since it uses less digits than its factorization.

21500001350514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29433674 (or 29433671 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The spelling of 21500001350514 in words is "twenty-one trillion, five hundred billion, one million, three hundred fifty thousand, five hundred fourteen".