20256315080 has 32 divisors (see below), whose sum is σ = 45587793600. Its totient is φ = 8100555456.

The previous prime is 20256315061. The next prime is 20256315091. The reversal of 20256315080 is 8051365202.

It is a super-4 number, since 4×20256315080⁴ (a number of 42 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110909 + ... + 229811.

It is an arithmetic number, because the mean of its divisors is an integer number (1424618550).

Almost surely, 2^20256315080 is an apocalyptic number.

20256315080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20256315080 is an abundant number, since it is smaller than the sum of its proper divisors (25331478520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20256315080 is a wasteful number, since it uses less digits than its factorization.

20256315080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123173 (or 123169 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 20256315080 in words is "twenty billion, two hundred fifty-six million, three hundred fifteen thousand, eighty".