172211445536 has 48 divisors (see below), whose sum is σ = 365166257400. Its totient is φ = 79472437248.

The previous prime is 172211445533. The next prime is 172211445569. The reversal of 172211445536 is 635544112271.

It can be written as a sum of positive squares in 4 ways, for example, as 143304645136 + 28906800400 = 378556^2 + 170020^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172211445493 and 172211445502.

It is not an unprimeable number, because it can be changed into a prime (172211445533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4209950 + ... + 4250658.

Almost surely, 2^172211445536 is an apocalyptic number.

172211445536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172211445536 is an abundant number, since it is smaller than the sum of its proper divisors (192954811864).

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

172211445536 is a wasteful number, since it uses less digits than its factorization.

172211445536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50901 (or 50893 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The spelling of 172211445536 in words is "one hundred seventy-two billion, two hundred eleven million, four hundred forty-five thousand, five hundred thirty-six".