21032134354 has 32 divisors (see below), whose sum is σ = 39722285952. Its totient is φ = 8113200000.

The previous prime is 21032134313. The next prime is 21032134411. The reversal of 21032134354 is 45343123012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 660547 + ... + 691654.

It is an arithmetic number, because the mean of its divisors is an integer number (1241321436).

Almost surely, 2^21032134354 is an apocalyptic number.

21032134354 is a deficient number, since it is larger than the sum of its proper divisors (18690151598).

21032134354 is a wasteful number, since it uses less digits than its factorization.

21032134354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352322.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 21032134354 its reverse (45343123012), we get a palindrome (66375257366).

The spelling of 21032134354 in words is "twenty-one billion, thirty-two million, one hundred thirty-four thousand, three hundred fifty-four".