21347548190 has 8 divisors (see below), whose sum is σ = 38425586760. Its totient is φ = 8539019272.

The previous prime is 21347548171. The next prime is 21347548207. The reversal of 21347548190 is 9184574312.

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

It is a super-2 number, since 2×21347548190² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067377400 + ... + 1067377419.

It is an arithmetic number, because the mean of its divisors is an integer number (4803198345).

Almost surely, 2^21347548190 is an apocalyptic number.

21347548190 is a deficient number, since it is larger than the sum of its proper divisors (17078038570).

21347548190 is a wasteful number, since it uses less digits than its factorization.

21347548190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134754826.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 21347548190 in words is "twenty-one billion, three hundred forty-seven million, five hundred forty-eight thousand, one hundred ninety".