101404378609 has 4 divisors (see below), whose sum is σ = 103762620016. Its totient is φ = 99046137204.

The previous prime is 101404378577. The next prime is 101404378613. The reversal of 101404378609 is 906873404101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 906873404101 = 7 ⋅129553343443.

It is a cyclic number.

It is not a de Polignac number, because 101404378609 - 2⁵ = 101404378577 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2358241363 = 101404378609 / (1 + 0 + 1 + 4 + 0 + 4 + 3 + 7 + 8 + 6 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101404378409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1179120639 + ... + 1179120724.

It is an arithmetic number, because the mean of its divisors is an integer number (25940655004).

Almost surely, 2^101404378609 is an apocalyptic number.

It is an amenable number.

101404378609 is a deficient number, since it is larger than the sum of its proper divisors (2358241407).

101404378609 is an equidigital number, since it uses as much as digits as its factorization.

101404378609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358241406.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 101404378609 in words is "one hundred one billion, four hundred four million, three hundred seventy-eight thousand, six hundred nine".