21465228862 has 32 divisors (see below), whose sum is σ = 40149987840. Its totient is φ = 8361571680.

The previous prime is 21465228821. The next prime is 21465228913. The reversal of 21465228862 is 26882256412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1272439 + ... + 1289197.

It is an arithmetic number, because the mean of its divisors is an integer number (1254687120).

Almost surely, 2^21465228862 is an apocalyptic number.

21465228862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21465228862 is a deficient number, since it is larger than the sum of its proper divisors (18684758978).

21465228862 is a wasteful number, since it uses less digits than its factorization.

21465228862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25096.

The product of its digits is 737280, while the sum is 46.

The spelling of 21465228862 in words is "twenty-one billion, four hundred sixty-five million, two hundred twenty-eight thousand, eight hundred sixty-two".