20786375850 has 48 divisors (see below), whose sum is σ = 51809332800. Its totient is φ = 5515171200.

The previous prime is 20786375809. The next prime is 20786375851. The reversal of 20786375850 is 5857368702.

It is a junction number, because it is equal to n+sod(n) for n = 20786375793 and 20786375802.

It is not an unprimeable number, because it can be changed into a prime (20786375851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 318331 + ... + 378030.

It is an arithmetic number, because the mean of its divisors is an integer number (1079361100).

Almost surely, 2^20786375850 is an apocalyptic number.

20786375850 is an abundant number, since it is smaller than the sum of its proper divisors (31022956950).

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

20786375850 is a wasteful number, since it uses less digits than its factorization.

20786375850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696575 (or 696570 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 20786375850 in words is "twenty billion, seven hundred eighty-six million, three hundred seventy-five thousand, eight hundred fifty".