5405123447644 has 24 divisors (see below), whose sum is σ = 9515288377728. Its totient is φ = 2686500605040.

The previous prime is 5405123447641. The next prime is 5405123447653. The reversal of 5405123447644 is 4467443215045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5405123447641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3173944 + ... + 4569919.

It is an arithmetic number, because the mean of its divisors is an integer number (396470349072).

Almost surely, 2^{5405123447644} is an apocalyptic number.

It is an amenable number.

5405123447644 is a deficient number, since it is larger than the sum of its proper divisors (4110164930084).

5405123447644 is a wasteful number, since it uses less digits than its factorization.

5405123447644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7744905 (or 7744903 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 5405123447644 in words is "five trillion, four hundred five billion, one hundred twenty-three million, four hundred forty-seven thousand, six hundred forty-four".