20047198626 has 128 divisors (see below), whose sum is σ = 58055477760. Its totient is φ = 4976142336.

The previous prime is 20047198571. The next prime is 20047198657. The reversal of 20047198626 is 62689174002.

It is a happy number.

20047198626 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 7 + 19 + 8 + 626 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 36451 + ... + 203526.

It is an arithmetic number, because the mean of its divisors is an integer number (453558420).

Almost surely, 2^20047198626 is an apocalyptic number.

20047198626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20047198626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29027738880).

20047198626 is an abundant number, since it is smaller than the sum of its proper divisors (38008279134).

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

20047198626 is a wasteful number, since it uses less digits than its factorization.

20047198626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240025 (or 240019 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 20047198626 in words is "twenty billion, forty-seven million, one hundred ninety-eight thousand, six hundred twenty-six".