1531234050660 has 144 divisors (see below), whose sum is σ = 4720220144640. Its totient is φ = 401734609920.

The previous prime is 1531234050629. The next prime is 1531234050719. The reversal of 1531234050660 is 660504321351.

1531234050660 is a `hidden beast` number, since 1 + 5 + 31 + 23 + 40 + 506 + 60 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3387901 + ... + 3813179.

It is an arithmetic number, because the mean of its divisors is an integer number (32779306560).

Almost surely, 2^{1531234050660} is an apocalyptic number.

1531234050660 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 1531234050660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360110072320).

1531234050660 is an abundant number, since it is smaller than the sum of its proper divisors (3188986093980).

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

1531234050660 is a wasteful number, since it uses less digits than its factorization.

1531234050660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425618 (or 425613 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 1531234050660 in words is "one trillion, five hundred thirty-one billion, two hundred thirty-four million, fifty thousand, six hundred sixty".