2017172040400 has 120 divisors (see below), whose sum is σ = 5339170512288. Its totient is φ = 726254400000.

The previous prime is 2017172040383. The next prime is 2017172040461. The reversal of 2017172040400 is 40402717102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1825146 + ... + 2713945.

Almost surely, 2^{2017172040400} is an apocalyptic number.

2017172040400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2017172040400 is an abundant number, since it is smaller than the sum of its proper divisors (3321998471888).

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

2017172040400 is a wasteful number, since it uses less digits than its factorization.

2017172040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539221 (or 4539210 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

Adding to 2017172040400 its reverse (40402717102), we get a palindrome (2057574757502).

The spelling of 2017172040400 in words is "two trillion, seventeen billion, one hundred seventy-two million, forty thousand, four hundred".