431224520001660 has 384 divisors, whose sum is σ = 1730305288857600. Its totient is φ = 86515263959040.

The previous prime is 431224520001659. The next prime is 431224520001661. The reversal of 431224520001660 is 66100025422134.

431224520001660 is a `hidden beast` number, since 4 + 3 + 122 + 4 + 520 + 0 + 0 + 1 + 6 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (431224520001659) and next prime (431224520001661).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431224520001661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 177603837 + ... + 180015476.

It is an arithmetic number, because the mean of its divisors is an integer number (4506003356400).

Almost surely, 2^{431224520001660} is an apocalyptic number.

It is an amenable number.

431224520001660 is an abundant number, since it is smaller than the sum of its proper divisors (1299080768855940).

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

431224520001660 is a wasteful number, since it uses less digits than its factorization.

431224520001660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357619378 (or 357619370 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 431224520001660 its reverse (66100025422134), we get a palindrome (497324545423794).

The spelling of 431224520001660 in words is "four hundred thirty-one trillion, two hundred twenty-four billion, five hundred twenty million, one thousand, six hundred sixty".