21467147546242 has 8 divisors (see below), whose sum is σ = 32200802423676. Its totient is φ = 10733546738352.

The previous prime is 21467147546233. The next prime is 21467147546267. The reversal of 21467147546242 is 24264574176412.

It can be written as a sum of positive squares in 2 ways, for example, as 19311621461001 + 2155526085241 = 4394499^2 + 1468171^2 .

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

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, 12509793 + ... + 14121940.

Almost surely, 2^{21467147546242} is an apocalyptic number.

21467147546242 is a deficient number, since it is larger than the sum of its proper divisors (10733654877434).

21467147546242 is a wasteful number, since it uses less digits than its factorization.

21467147546242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27034772.

The product of its digits is 18063360, while the sum is 55.

The spelling of 21467147546242 in words is "twenty-one trillion, four hundred sixty-seven billion, one hundred forty-seven million, five hundred forty-six thousand, two hundred forty-two".