100515404040 has 32 divisors (see below), whose sum is σ = 301546212480. Its totient is φ = 26804107712.

The previous prime is 100515403973. The next prime is 100515404047. The reversal of 100515404040 is 40404515001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 100515404040.

It is not an unprimeable number, because it can be changed into a prime (100515404047) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 418814064 + ... + 418814303.

It is an arithmetic number, because the mean of its divisors is an integer number (9423319140).

Almost surely, 2^100515404040 is an apocalyptic number.

100515404040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100515404040 is an abundant number, since it is smaller than the sum of its proper divisors (201030808440).

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

100515404040 is a wasteful number, since it uses less digits than its factorization.

100515404040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837628381 (or 837628377 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 100515404040 its reverse (40404515001), we get a palindrome (140919919041).

The spelling of 100515404040 in words is "one hundred billion, five hundred fifteen million, four hundred four thousand, forty".