21434130251039 has 48 divisors (see below), whose sum is σ = 24786752774784. Its totient is φ = 18371101795200.

The previous prime is 21434130251033. The next prime is 21434130251113. The reversal of 21434130251039 is 93015203143412.

It is a happy number.

It is not a de Polignac number, because 21434130251039 - 2²⁴ = 21434113473823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21434130250993 and 21434130251011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434130251033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2661628937 + ... + 2661636989.

It is an arithmetic number, because the mean of its divisors is an integer number (516390682808).

Almost surely, 2^{21434130251039} is an apocalyptic number.

21434130251039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21434130251039 is a deficient number, since it is larger than the sum of its proper divisors (3352622523745).

21434130251039 is a wasteful number, since it uses less digits than its factorization.

21434130251039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14856 (or 14827 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 21434130251039 in words is "twenty-one trillion, four hundred thirty-four billion, one hundred thirty million, two hundred fifty-one thousand, thirty-nine".