21160537754 has 8 divisors (see below), whose sum is σ = 32123226240. Its totient is φ = 10452795676.

The previous prime is 21160537751. The next prime is 21160537759. The reversal of 21160537754 is 45773506112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21160537751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63736394 + ... + 63736725.

It is an arithmetic number, because the mean of its divisors is an integer number (4015403280).

Almost surely, 2^21160537754 is an apocalyptic number.

21160537754 is a deficient number, since it is larger than the sum of its proper divisors (10962688486).

21160537754 is a wasteful number, since it uses less digits than its factorization.

21160537754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127473204.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 21160537754 in words is "twenty-one billion, one hundred sixty million, five hundred thirty-seven thousand, seven hundred fifty-four".