100419378445 has 4 divisors (see below), whose sum is σ = 120503254140. Its totient is φ = 80335502752.

The previous prime is 100419378443. The next prime is 100419378457. The reversal of 100419378445 is 544873914001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76850373961 + 23569004484 = 277219^2 + 153522^2 .

It is a cyclic number.

It is not a de Polignac number, because 100419378445 - 2¹ = 100419378443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100419378395 and 100419378404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100419378443) 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 3 ways as a sum of consecutive naturals, for example, 10041937840 + ... + 10041937849.

It is an arithmetic number, because the mean of its divisors is an integer number (30125813535).

Almost surely, 2^100419378445 is an apocalyptic number.

It is an amenable number.

100419378445 is a deficient number, since it is larger than the sum of its proper divisors (20083875695).

100419378445 is an equidigital number, since it uses as much as digits as its factorization.

100419378445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20083875694.

The product of its (nonzero) digits is 483840, while the sum is 46.

It can be divided in two parts, 100419 and 378445, that added together give a square (478864 = 692²).

The spelling of 100419378445 in words is "one hundred billion, four hundred nineteen million, three hundred seventy-eight thousand, four hundred forty-five".