20260857708 has 540 divisors, whose sum is σ = 69034678440. Its totient is φ = 4992938496.

The previous prime is 20260857707. The next prime is 20260857731. The reversal of 20260857708 is 80775806202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20260857707) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 277545960 + ... + 277546032.

Almost surely, 2^20260857708 is an apocalyptic number.

20260857708 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20260857708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34517339220).

20260857708 is an abundant number, since it is smaller than the sum of its proper divisors (48773820732).

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

20260857708 is a wasteful number, since it uses less digits than its factorization.

20260857708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The spelling of 20260857708 in words is "twenty billion, two hundred sixty million, eight hundred fifty-seven thousand, seven hundred eight".