21143423130040 has 16 divisors (see below), whose sum is σ = 47572702042680. Its totient is φ = 8457369252000.

The previous prime is 21143423130017. The next prime is 21143423130101. The reversal of 21143423130040 is 4003132434112.

It is a happy number.

21143423130040 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21143423129990 and 21143423130008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264292789086 + ... + 264292789165.

Almost surely, 2^{21143423130040} is an apocalyptic number.

21143423130040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21143423130040 is an abundant number, since it is smaller than the sum of its proper divisors (26429278912640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21143423130040 is a wasteful number, since it uses less digits than its factorization.

21143423130040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528585578262 (or 528585578258 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 21143423130040 its reverse (4003132434112), we get a palindrome (25146555564152).

The spelling of 21143423130040 in words is "twenty-one trillion, one hundred forty-three billion, four hundred twenty-three million, one hundred thirty thousand, forty".