21467225663164 has 6 divisors (see below), whose sum is σ = 37567644910544. Its totient is φ = 10733612831580.

The previous prime is 21467225663101. The next prime is 21467225663227. The reversal of 21467225663164 is 46136652276412.

It is an interprime number because it is at equal distance from previous prime (21467225663101) and next prime (21467225663227).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2683403207892 + ... + 2683403207899.

Almost surely, 2^{21467225663164} is an apocalyptic number.

It is an amenable number.

21467225663164 is a deficient number, since it is larger than the sum of its proper divisors (16100419247380).

21467225663164 is a wasteful number, since it uses less digits than its factorization.

21467225663164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366806415795 (or 5366806415793 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 55.

The spelling of 21467225663164 in words is "twenty-one trillion, four hundred sixty-seven billion, two hundred twenty-five million, six hundred sixty-three thousand, one hundred sixty-four".