20035627081 has 4 divisors (see below), whose sum is σ = 20681937664. Its totient is φ = 19389316500.

The previous prime is 20035627069. The next prime is 20035627093. The reversal of 20035627081 is 18072653002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20035627069) and next prime (20035627093).

It is a cyclic number.

It is not a de Polignac number, because 20035627081 - 2¹⁹ = 20035102793 is a prime.

It is a super-2 number, since 2×20035627081² (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 (20035625081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323155245 + ... + 323155306.

It is an arithmetic number, because the mean of its divisors is an integer number (5170484416).

Almost surely, 2^20035627081 is an apocalyptic number.

It is an amenable number.

20035627081 is a deficient number, since it is larger than the sum of its proper divisors (646310583).

20035627081 is an equidigital number, since it uses as much as digits as its factorization.

20035627081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646310582.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20035627081 in words is "twenty billion, thirty-five million, six hundred twenty-seven thousand, eighty-one".