21347460043 has 32 divisors (see below), whose sum is σ = 26451532800. Its totient is φ = 16776464256.

The previous prime is 21347459927. The next prime is 21347460049. The reversal of 21347460043 is 34006474312.

It is a cyclic number.

It is not a de Polignac number, because 21347460043 - 2²¹ = 21345362891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21347459990 and 21347460008.

It is not an unprimeable number, because it can be changed into a prime (21347460049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9244173 + ... + 9246481.

It is an arithmetic number, because the mean of its divisors is an integer number (826610400).

Almost surely, 2^21347460043 is an apocalyptic number.

21347460043 is a deficient number, since it is larger than the sum of its proper divisors (5104072757).

21347460043 is a wasteful number, since it uses less digits than its factorization.

21347460043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971.

The product of its (nonzero) digits is 48384, while the sum is 34.

The spelling of 21347460043 in words is "twenty-one billion, three hundred forty-seven million, four hundred sixty thousand, forty-three".