2523471643643 has 4 divisors (see below), whose sum is σ = 2523492534288. Its totient is φ = 2523450753000.

The previous prime is 2523471643639. The next prime is 2523471643681. The reversal of 2523471643643 is 3463461743252.

It is a happy number.

2523471643643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2523471643643 - 2² = 2523471643639 is a prime.

It is a super-2 number, since 2×2523471643643² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2523471643591 and 2523471643600.

It is not an unprimeable number, because it can be changed into a prime (2523471643243) 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, 10263071 + ... + 10506072.

It is an arithmetic number, because the mean of its divisors is an integer number (630873133572).

Almost surely, 2^{2523471643643} is an apocalyptic number.

2523471643643 is a deficient number, since it is larger than the sum of its proper divisors (20890645).

2523471643643 is a wasteful number, since it uses less digits than its factorization.

2523471643643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20890644.

The product of its digits is 8709120, while the sum is 50.

The spelling of 2523471643643 in words is "two trillion, five hundred twenty-three billion, four hundred seventy-one million, six hundred forty-three thousand, six hundred forty-three".