1423833370021 has 4 divisors (see below), whose sum is σ = 1424879538444. Its totient is φ = 1422787201600.

The previous prime is 1423833370007. The next prime is 1423833370067. The reversal of 1423833370021 is 1200733383241.

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 670574280996 + 753259089025 = 818886^2 + 867905^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423833370021 - 2⁹ = 1423833369509 is a prime.

It is a super-3 number, since 3×1423833370021³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423833070021) 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, 523082170 + ... + 523084891.

It is an arithmetic number, because the mean of its divisors is an integer number (356219884611).

Almost surely, 2^{1423833370021} is an apocalyptic number.

It is an amenable number.

1423833370021 is a deficient number, since it is larger than the sum of its proper divisors (1046168423).

1423833370021 is a wasteful number, since it uses less digits than its factorization.

1423833370021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046168422.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 1423833370021 in words is "one trillion, four hundred twenty-three billion, eight hundred thirty-three million, three hundred seventy thousand, twenty-one".