100155125403 has 8 divisors (see below), whose sum is σ = 148377963600. Its totient is φ = 66770083584.

The previous prime is 100155125327. The next prime is 100155125419. The reversal of 100155125403 is 304521551001.

100155125403 is a `hidden beast` number, since 100 + 1 + 5 + 5 + 12 + 540 + 3 = 666.

It is not a de Polignac number, because 100155125403 - 2⁹ = 100155124891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3709449089 = 100155125403 / (1 + 0 + 0 + 1 + 5 + 5 + 1 + 2 + 5 + 4 + 0 + 3).

It is not an unprimeable number, because it can be changed into a prime (100155121403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854724518 + ... + 1854724571.

It is an arithmetic number, because the mean of its divisors is an integer number (18547245450).

Almost surely, 2^100155125403 is an apocalyptic number.

100155125403 is a deficient number, since it is larger than the sum of its proper divisors (48222838197).

100155125403 is an equidigital number, since it uses as much as digits as its factorization.

100155125403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709449098 (or 3709449092 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 100155125403 its reverse (304521551001), we get a palindrome (404676676404).

The spelling of 100155125403 in words is "one hundred billion, one hundred fifty-five million, one hundred twenty-five thousand, four hundred three".