21464132770 has 16 divisors (see below), whose sum is σ = 38637160128. Its totient is φ = 8585270640.

The previous prime is 21464132717. The next prime is 21464132771. The reversal of 21464132770 is 7723146412.

It is not an unprimeable number, because it can be changed into a prime (21464132771) 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, 330265 + ... + 389875.

It is an arithmetic number, because the mean of its divisors is an integer number (2414822508).

Almost surely, 2^21464132770 is an apocalyptic number.

21464132770 is a deficient number, since it is larger than the sum of its proper divisors (17173027358).

21464132770 is a wasteful number, since it uses less digits than its factorization.

21464132770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95625.

The product of its (nonzero) digits is 56448, while the sum is 37.

The spelling of 21464132770 in words is "twenty-one billion, four hundred sixty-four million, one hundred thirty-two thousand, seven hundred seventy".