20102580281 has 8 divisors (see below), whose sum is σ = 23508665664. Its totient is φ = 16830066960.

The previous prime is 20102580269. The next prime is 20102580287. The reversal of 20102580281 is 18208520102.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-20102580281 is a prime.

It is a super-2 number, since 2×20102580281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20102580287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33392690 + ... + 33393291.

It is an arithmetic number, because the mean of its divisors is an integer number (2938583208).

Almost surely, 2^20102580281 is an apocalyptic number.

It is an amenable number.

20102580281 is a deficient number, since it is larger than the sum of its proper divisors (3406085383).

20102580281 is an equidigital number, since it uses as much as digits as its factorization.

20102580281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66786031.

The product of its (nonzero) digits is 2560, while the sum is 29.

The spelling of 20102580281 in words is "twenty billion, one hundred two million, five hundred eighty thousand, two hundred eighty-one".