100500040000 has 70 divisors (see below), whose sum is σ = 249207535874. Its totient is φ = 40200000000.

The previous prime is 100500039973. The next prime is 100500040061. The reversal of 100500040000 is 40005001.

It can be written as a sum of positive squares in 5 ways, for example, as 73021010176 + 27479029824 = 270224^2 + 165768^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1216251 + ... + 1296250.

Almost surely, 2^100500040000 is an apocalyptic number.

100500040000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100500040000 is an abundant number, since it is smaller than the sum of its proper divisors (148707495874).

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

100500040000 is an frugal number, since it uses more digits than its factorization.

100500040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2512533 (or 2512508 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

Adding to 100500040000 its reverse (40005001), we get a palindrome (100540045001).

The spelling of 100500040000 in words is "one hundred billion, five hundred million, forty thousand".