21355473044270 has 8 divisors (see below), whose sum is σ = 38439851479704. Its totient is φ = 8542189217704.

The previous prime is 21355473044267. The next prime is 21355473044287. The reversal of 21355473044270 is 7244037455312.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067773652204 + ... + 1067773652223.

It is an arithmetic number, because the mean of its divisors is an integer number (4804981434963).

Almost surely, 2^{21355473044270} is an apocalyptic number.

21355473044270 is a deficient number, since it is larger than the sum of its proper divisors (17084378435434).

21355473044270 is a wasteful number, since it uses less digits than its factorization.

21355473044270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135547304434.

The product of its (nonzero) digits is 2822400, while the sum is 47.

The spelling of 21355473044270 in words is "twenty-one trillion, three hundred fifty-five billion, four hundred seventy-three million, forty-four thousand, two hundred seventy".