40657173918228 has 144 divisors (see below), whose sum is σ = 122643425888256. Its totient is φ = 11103782564160.

The previous prime is 40657173918223. The next prime is 40657173918271. The reversal of 40657173918228 is 82281937175604.

40657173918228 is a `hidden beast` number, since 4 + 0 + 6 + 5 + 7 + 17 + 391 + 8 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40657173918223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6230433 + ... + 10960503.

It is a 1-persistent number, because it is pandigital, but 2⋅40657173918228 = 81314347836456 is not.

Almost surely, 2^{40657173918228} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40657173918228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61321712944128).

40657173918228 is an abundant number, since it is smaller than the sum of its proper divisors (81986251970028).

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

40657173918228 is a wasteful number, since it uses less digits than its factorization.

40657173918228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731594 (or 4731589 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 40657173918228 in words is "forty trillion, six hundred fifty-seven billion, one hundred seventy-three million, nine hundred eighteen thousand, two hundred twenty-eight".