19700126208 has 480 divisors, whose sum is σ = 68667033600. Its totient is φ = 5559902208.

The previous prime is 19700126207. The next prime is 19700126279. The reversal of 19700126208 is 80262100791.

19700126208 is a `hidden beast` number, since 19 + 7 + 0 + 0 + 12 + 620 + 8 = 666.

It is a super-2 number, since 2×19700126208² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (19700126207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86026638 + ... + 86026866.

It is an arithmetic number, because the mean of its divisors is an integer number (143056320).

Almost surely, 2^19700126208 is an apocalyptic number.

19700126208 is a gapful number since it is divisible by the number (18) 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 19700126208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34333516800).

19700126208 is an abundant number, since it is smaller than the sum of its proper divisors (48966907392).

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

19700126208 is a wasteful number, since it uses less digits than its factorization.

19700126208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

Adding to 19700126208 its reverse (80262100791), we get a palindrome (99962226999).

The spelling of 19700126208 in words is "nineteen billion, seven hundred million, one hundred twenty-six thousand, two hundred eight".