20010010040 has 32 divisors (see below), whose sum is σ = 45026649360. Its totient is φ = 8003270400.

The previous prime is 20010010003. The next prime is 20010010049. The reversal of 20010010040 is 4001001002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010010049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701660 + ... + 729620.

Almost surely, 2^20010010040 is an apocalyptic number.

20010010040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010010040 is an abundant number, since it is smaller than the sum of its proper divisors (25016639320).

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

20010010040 is a wasteful number, since it uses less digits than its factorization.

20010010040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45863 (or 45859 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 20010010040 its reverse (4001001002), we get a palindrome (24011011042).

The spelling of 20010010040 in words is "twenty billion, ten million, ten thousand, forty".