531451553112 has 128 divisors (see below), whose sum is σ = 1483159953600. Its totient is φ = 176323682304.

The previous prime is 531451553077. The next prime is 531451553147. The reversal of 531451553112 is 211355154135.

531451553112 is a `hidden beast` number, since 53 + 1 + 4 + 51 + 553 + 1 + 1 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (531451553077) and next prime (531451553147).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44906748 + ... + 44918580.

Almost surely, 2^531451553112 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 531451553112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741579976800).

531451553112 is an abundant number, since it is smaller than the sum of its proper divisors (951708400488).

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

531451553112 is a wasteful number, since it uses less digits than its factorization.

531451553112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12802 (or 12792 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The spelling of 531451553112 in words is "five hundred thirty-one billion, four hundred fifty-one million, five hundred fifty-three thousand, one hundred twelve".