21160732370 has 16 divisors (see below), whose sum is σ = 39318006528. Its totient is φ = 8191251120.

The previous prime is 21160732367. The next prime is 21160732381. The reversal of 21160732370 is 7323706112.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34129904 + ... + 34130523.

It is an arithmetic number, because the mean of its divisors is an integer number (2457375408).

Almost surely, 2^21160732370 is an apocalyptic number.

21160732370 is a deficient number, since it is larger than the sum of its proper divisors (18157274158).

21160732370 is a wasteful number, since it uses less digits than its factorization.

21160732370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68260465.

The product of its (nonzero) digits is 10584, while the sum is 32.

The spelling of 21160732370 in words is "twenty-one billion, one hundred sixty million, seven hundred thirty-two thousand, three hundred seventy".