22165161151672 has 128 divisors (see below), whose sum is σ = 51970496256000. Its totient is φ = 8609842200960.

The previous prime is 22165161151667. The next prime is 22165161151751. The reversal of 22165161151672 is 27615116156122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289403479 + ... + 289480057.

It is an arithmetic number, because the mean of its divisors is an integer number (406019502000).

Almost surely, 2^{22165161151672} is an apocalyptic number.

22165161151672 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22165161151672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25985248128000).

22165161151672 is an abundant number, since it is smaller than the sum of its proper divisors (29805335104328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22165161151672 is a wasteful number, since it uses less digits than its factorization.

22165161151672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78009 (or 78005 counting only the distinct ones).

The product of its digits is 302400, while the sum is 46.

The spelling of 22165161151672 in words is "twenty-two trillion, one hundred sixty-five billion, one hundred sixty-one million, one hundred fifty-one thousand, six hundred seventy-two".