1043666404454 has 4 divisors (see below), whose sum is σ = 1565499606684. Its totient is φ = 521833202226.

The previous prime is 1043666404441. The next prime is 1043666404457. The reversal of 1043666404454 is 4544046663401.

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

It is a super-2 number, since 2×1043666404454² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1043666404399 and 1043666404408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043666404457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260916601112 + ... + 260916601115.

It is an arithmetic number, because the mean of its divisors is an integer number (391374901671).

Almost surely, 2^{1043666404454} is an apocalyptic number.

1043666404454 is a deficient number, since it is larger than the sum of its proper divisors (521833202230).

1043666404454 is an equidigital number, since it uses as much as digits as its factorization.

1043666404454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521833202229.

The product of its (nonzero) digits is 3317760, while the sum is 47.

The spelling of 1043666404454 in words is "one trillion, forty-three billion, six hundred sixty-six million, four hundred four thousand, four hundred fifty-four".