20581029514 has 8 divisors (see below), whose sum is σ = 31189807908. Its totient is φ = 10184426880.

The previous prime is 20581029493. The next prime is 20581029523. The reversal of 20581029514 is 41592018502.

It can be written as a sum of positive squares in 2 ways, for example, as 19094541489 + 1486488025 = 138183^2 + 38555^2 .

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

It is a super-2 number, since 2×20581029514² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 53043697 + ... + 53044084.

Almost surely, 2^20581029514 is an apocalyptic number.

20581029514 is a deficient number, since it is larger than the sum of its proper divisors (10608778394).

20581029514 is a wasteful number, since it uses less digits than its factorization.

20581029514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106087880.

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 20581029514 in words is "twenty billion, five hundred eighty-one million, twenty-nine thousand, five hundred fourteen".