100620641420 has 96 divisors (see below), whose sum is σ = 241047467136. Its totient is φ = 34951680000.

The previous prime is 100620641419. The next prime is 100620641507. The reversal of 100620641420 is 24146026001.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 100620641420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16355345 + ... + 16361495.

It is an arithmetic number, because the mean of its divisors is an integer number (2510911116).

Almost surely, 2^100620641420 is an apocalyptic number.

100620641420 is a gapful number since it is divisible by the number (10) 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 100620641420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120523733568).

100620641420 is an abundant number, since it is smaller than the sum of its proper divisors (140426825716).

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

100620641420 is a wasteful number, since it uses less digits than its factorization.

100620641420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891 (or 9889 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 100620641420 its reverse (24146026001), we get a palindrome (124766667421).

The spelling of 100620641420 in words is "one hundred billion, six hundred twenty million, six hundred forty-one thousand, four hundred twenty".