21163760470 has 64 divisors (see below), whose sum is σ = 40496863680. Its totient is φ = 7940947968.

The previous prime is 21163760399. The next prime is 21163760491. The reversal of 21163760470 is 7406736112.

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, 8542872 + ... + 8545348.

It is an arithmetic number, because the mean of its divisors is an integer number (632763495).

Almost surely, 2^21163760470 is an apocalyptic number.

21163760470 is a deficient number, since it is larger than the sum of its proper divisors (19333103210).

21163760470 is a wasteful number, since it uses less digits than its factorization.

21163760470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 21163760470 in words is "twenty-one billion, one hundred sixty-three million, seven hundred sixty thousand, four hundred seventy".