20931049514 has 8 divisors (see below), whose sum is σ = 31707431748. Its totient is φ = 10361905600.

The previous prime is 20931049501. The next prime is 20931049547. The reversal of 20931049514 is 41594013902.

It can be written as a sum of positive squares in 2 ways, for example, as 13904418889 + 7026630625 = 117917^2 + 83825^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 51809327 + ... + 51809730.

Almost surely, 2^20931049514 is an apocalyptic number.

20931049514 is a deficient number, since it is larger than the sum of its proper divisors (10776382234).

20931049514 is a wasteful number, since it uses less digits than its factorization.

20931049514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103619160.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 20931049514 in words is "twenty billion, nine hundred thirty-one million, forty-nine thousand, five hundred fourteen".