20081051290 has 32 divisors (see below), whose sum is σ = 36636065424. Its totient is φ = 7924070400.

The previous prime is 20081051281. The next prime is 20081051323. The reversal of 20081051290 is 9215018002.

It can be written as a sum of positive squares in 8 ways, for example, as 12753862489 + 7327188801 = 112933^2 + 85599^2 .

It is a super-2 number, since 2×20081051290² (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 15 ways as a sum of consecutive naturals, for example, 243882 + ... + 315658.

Almost surely, 2^20081051290 is an apocalyptic number.

20081051290 is a deficient number, since it is larger than the sum of its proper divisors (16555014134).

20081051290 is a wasteful number, since it uses less digits than its factorization.

20081051290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72162.

The product of its (nonzero) digits is 1440, while the sum is 28.

Adding to 20081051290 its reverse (9215018002), we get a palindrome (29296069292).

The spelling of 20081051290 in words is "twenty billion, eighty-one million, fifty-one thousand, two hundred ninety".