21034513341534 has 64 divisors (see below), whose sum is σ = 53867254989312. Its totient is φ = 5315847523200.

The previous prime is 21034513341503. The next prime is 21034513341563. The reversal of 21034513341534 is 43514331543012.

It is a junction number, because it is equal to n+sod(n) for n = 21034513341492 and 21034513341501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 615243037 + ... + 615277224.

It is an arithmetic number, because the mean of its divisors is an integer number (841675859208).

Almost surely, 2^{21034513341534} is an apocalyptic number.

21034513341534 is an abundant number, since it is smaller than the sum of its proper divisors (32832741647778).

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

21034513341534 is a wasteful number, since it uses less digits than its factorization.

21034513341534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230520321.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 21034513341534 its reverse (43514331543012), we get a palindrome (64548844884546).

The spelling of 21034513341534 in words is "twenty-one trillion, thirty-four billion, five hundred thirteen million, three hundred forty-one thousand, five hundred thirty-four".