100000401550 has 24 divisors (see below), whose sum is σ = 212572282896. Its totient is φ = 34285851840.

The previous prime is 100000401547. The next prime is 100000401559. The reversal of 100000401550 is 55104000001.

It is a happy number.

It is a super-2 number, since 2×100000401550² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000401559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142857367 + ... + 142858066.

It is an arithmetic number, because the mean of its divisors is an integer number (8857178454).

Almost surely, 2^100000401550 is an apocalyptic number.

100000401550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100000401550 is an abundant number, since it is smaller than the sum of its proper divisors (112571881346).

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

100000401550 is a wasteful number, since it uses less digits than its factorization.

100000401550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285715452 (or 285715447 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

Adding to 100000401550 its reverse (55104000001), we get a palindrome (155104401551).

The spelling of 100000401550 in words is "one hundred billion, four hundred one thousand, five hundred fifty".