172447342240 has 96 divisors (see below), whose sum is σ = 408744829584. Its totient is φ = 68752834560.

The previous prime is 172447342211. The next prime is 172447342247. The reversal of 172447342240 is 42243744271.

It can be written as a sum of positive squares in 8 ways, for example, as 12604103824 + 159843238416 = 112268^2 + 399804^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 172447342193 and 172447342202.

It is not an unprimeable number, because it can be changed into a prime (172447342247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105342702 + ... + 105344338.

Almost surely, 2^172447342240 is an apocalyptic number.

172447342240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172447342240 is an abundant number, since it is smaller than the sum of its proper divisors (236297487344).

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

172447342240 is a wasteful number, since it uses less digits than its factorization.

172447342240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410 (or 3402 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 40.

The spelling of 172447342240 in words is "one hundred seventy-two billion, four hundred forty-seven million, three hundred forty-two thousand, two hundred forty".