163221026744 has 8 divisors (see below), whose sum is σ = 306039425160. Its totient is φ = 81610513368.

The previous prime is 163221026687. The next prime is 163221026753. The reversal of 163221026744 is 447620122361.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×163221026744² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163221026698 and 163221026707.

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, 10201314164 + ... + 10201314179.

It is an arithmetic number, because the mean of its divisors is an integer number (38254928145).

Almost surely, 2^163221026744 is an apocalyptic number.

It is an amenable number.

163221026744 is a deficient number, since it is larger than the sum of its proper divisors (142818398416).

163221026744 is a wasteful number, since it uses less digits than its factorization.

163221026744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20402628349 (or 20402628345 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 163221026744 in words is "one hundred sixty-three billion, two hundred twenty-one million, twenty-six thousand, seven hundred forty-four".