21152595754 has 16 divisors (see below), whose sum is σ = 31914453600. Its totient is φ = 10514475664.

The previous prime is 21152595727. The next prime is 21152595757. The reversal of 21152595754 is 45759525112.

It is not an unprimeable number, because it can be changed into a prime (21152595757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2697912 + ... + 2705740.

It is an arithmetic number, because the mean of its divisors is an integer number (1994653350).

Almost surely, 2^21152595754 is an apocalyptic number.

21152595754 is a deficient number, since it is larger than the sum of its proper divisors (10761857846).

21152595754 is a wasteful number, since it uses less digits than its factorization.

21152595754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15557.

The product of its digits is 630000, while the sum is 46.

The spelling of 21152595754 in words is "twenty-one billion, one hundred fifty-two million, five hundred ninety-five thousand, seven hundred fifty-four".