20058751856 has 80 divisors (see below), whose sum is σ = 46018387968. Its totient is φ = 8349868800.

The previous prime is 20058751849. The next prime is 20058751883. The reversal of 20058751856 is 65815785002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20058751856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256061 + ... + 325091.

Almost surely, 2^20058751856 is an apocalyptic number.

20058751856 is a gapful number since it is divisible by the number (26) 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 20058751856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23009193984).

20058751856 is an abundant number, since it is smaller than the sum of its proper divisors (25959636112).

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

20058751856 is a wasteful number, since it uses less digits than its factorization.

20058751856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69190 (or 69184 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 20058751856 in words is "twenty billion, fifty-eight million, seven hundred fifty-one thousand, eight hundred fifty-six".