21467153706494 has 64 divisors (see below), whose sum is σ = 34484755968000. Its totient is φ = 9998992553088.

The previous prime is 21467153706491. The next prime is 21467153706529. The reversal of 21467153706494 is 49460735176412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21467153706491) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 964934879 + ... + 964957125.

It is an arithmetic number, because the mean of its divisors is an integer number (538824312000).

Almost surely, 2^{21467153706494} is an apocalyptic number.

21467153706494 is a deficient number, since it is larger than the sum of its proper divisors (13017602261506).

21467153706494 is a wasteful number, since it uses less digits than its factorization.

21467153706494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24497.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 21467153706494 in words is "twenty-one trillion, four hundred sixty-seven billion, one hundred fifty-three million, seven hundred six thousand, four hundred ninety-four".