172890275040 has 1920 divisors, whose sum is σ = 790352640000. Its totient is φ = 35407798272.

The previous prime is 172890274981. The next prime is 172890275071. The reversal of 172890275040 is 40572098271.

It is a happy number.

172890275040 is a `hidden beast` number, since 17 + 28 + 90 + 27 + 504 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1942587316 + ... + 1942587404.

It is an arithmetic number, because the mean of its divisors is an integer number (411642000).

Almost surely, 2^172890275040 is an apocalyptic number.

172890275040 is a gapful number since it is divisible by the number (10) 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 172890275040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395176320000).

172890275040 is an abundant number, since it is smaller than the sum of its proper divisors (617462364960).

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

172890275040 is a wasteful number, since it uses less digits than its factorization.

172890275040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 172890275040 in words is "one hundred seventy-two billion, eight hundred ninety million, two hundred seventy-five thousand, forty".